€•)³      Œsphinx.addnodes”Œdocument”“”)”}”(Œ	rawsource”Œ ”Œchildren”]”(Œtranslations”ŒLanguagesNode”“”)”}”(hhh]”(h Œpending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ
attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ	refdomain”Œstd”Œreftype”Œdoc”Œ	reftarget”Œ"/translations/zh_CN/networking/ila”Œmodname”NŒ	classname”NŒrefexplicit”ˆuŒtagname”hhhubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ"/translations/zh_TW/networking/ila”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ"/translations/it_IT/networking/ila”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ"/translations/ja_JP/networking/ila”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ"/translations/ko_KR/networking/ila”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒPortuguese (Brazilian)”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ"/translations/pt_BR/networking/ila”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh–sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ"/translations/sp_SP/networking/ila”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh·sbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1hµhhh²hh³Œ</var/lib/git/docbuild/linux/Documentation/networking/ila.rst”h´KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒ#Identifier Locator Addressing (ILA)”h]”hŒ#Identifier Locator Addressing (ILA)”…””}”(hhÏh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhhÊh²hh³hÇh´KubhÉ)”}”(hhh]”(hÎ)”}”(hŒIntroduction”h]”hŒIntroduction”…””}”(hhàh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhhÝh²hh³hÇh´K	ubhŒ	paragraph”“”)”}”(hX°  Identifier-locator addressing (ILA) is a technique used with IPv6 that
differentiates between location and identity of a network node. Part of an
address expresses the immutable identity of the node, and another part
indicates the location of the node which can be dynamic. Identifier-locator
addressing can be used to efficiently implement overlay networks for
network virtualization as well as solutions for use cases in mobility.”h]”hX°  Identifier-locator addressing (ILA) is a technique used with IPv6 that
differentiates between location and identity of a network node. Part of an
address expresses the immutable identity of the node, and another part
indicates the location of the node which can be dynamic. Identifier-locator
addressing can be used to efficiently implement overlay networks for
network virtualization as well as solutions for use cases in mobility.”…””}”(hhðh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KhhÝh²hubhï)”}”(hX8  ILA can be thought of as means to implement an overlay network without
encapsulation. This is accomplished by performing network address
translation on destination addresses as a packet traverses a network. To
the network, an ILA translated packet appears to be no different than any
other IPv6 packet. For instance, if the transport protocol is TCP then an
ILA translated packet looks like just another TCP/IPv6 packet. The
advantage of this is that ILA is transparent to the network so that
optimizations in the network, such as ECMP, RSS, GRO, GSO, etc., just work.”h]”hX8  ILA can be thought of as means to implement an overlay network without
encapsulation. This is accomplished by performing network address
translation on destination addresses as a packet traverses a network. To
the network, an ILA translated packet appears to be no different than any
other IPv6 packet. For instance, if the transport protocol is TCP then an
ILA translated packet looks like just another TCP/IPv6 packet. The
advantage of this is that ILA is transparent to the network so that
optimizations in the network, such as ECMP, RSS, GRO, GSO, etc., just work.”…””}”(hhþh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KhhÝh²hubhï)”}”(hŒJThe ILA protocol is described in Internet-Draft draft-herbert-intarea-ila.”h]”hŒJThe ILA protocol is described in Internet-Draft draft-herbert-intarea-ila.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KhhÝh²hubeh}”(h]”Œintroduction”ah ]”h"]”Œintroduction”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´K	ubhÉ)”}”(hhh]”(hÎ)”}”(hŒILA terminology”h]”hŒILA terminology”…””}”(hj%  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhj"  h²hh³hÇh´KubhŒblock_quote”“”)”}”(hX•  - Identifier
              A number that identifies an addressable node in the network
              independent of its location. ILA identifiers are sixty-four
              bit values.

- Locator
              A network prefix that routes to a physical host. Locators
              provide the topological location of an addressed node. ILA
              locators are sixty-four bit prefixes.

- ILA mapping
              A mapping of an ILA identifier to a locator (or to a
              locator and meta data). An ILA domain maintains a database
              that contains mappings for all destinations in the domain.

- SIR address
              An IPv6 address composed of a SIR prefix (upper sixty-
              four bits) and an identifier (lower sixty-four bits).
              SIR addresses are visible to applications and provide a
              means for them to address nodes independent of their
              location.

- ILA address
              An IPv6 address composed of a locator (upper sixty-four
              bits) and an identifier (low order sixty-four bits). ILA
              addresses are never visible to an application.

- ILA host
              An end host that is capable of performing ILA translations
              on transmit or receive.

- ILA router
              A network node that performs ILA translation and forwarding
              of translated packets.

- ILA forwarding cache
              A type of ILA router that only maintains a working set
              cache of mappings.

- ILA node
              A network node capable of performing ILA translations. This
              can be an ILA router, ILA forwarding cache, or ILA host.

”h]”hŒbullet_list”“”)”}”(hhh]”(hŒ	list_item”“”)”}”(hŒ³Identifier
            A number that identifies an addressable node in the network
            independent of its location. ILA identifiers are sixty-four
            bit values.
”h]”hŒdefinition_list”“”)”}”(hhh]”hŒdefinition_list_item”“”)”}”(hŒIdentifier
A number that identifies an addressable node in the network
independent of its location. ILA identifiers are sixty-four
bit values.
”h]”(hŒterm”“”)”}”(hŒ
Identifier”h]”hŒ
Identifier”…””}”(hjQ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´K$hjK  ubhŒ
definition”“”)”}”(hhh]”hï)”}”(hŒƒA number that identifies an addressable node in the network
independent of its location. ILA identifiers are sixty-four
bit values.”h]”hŒƒA number that identifies an addressable node in the network
independent of its location. ILA identifiers are sixty-four
bit values.”…””}”(hjd  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K"hja  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hjK  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´K$hjF  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hj@  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hj;  ubj?  )”}”(hŒÇLocator
            A network prefix that routes to a physical host. Locators
            provide the topological location of an addressed node. ILA
            locators are sixty-four bit prefixes.
”h]”jE  )”}”(hhh]”jJ  )”}”(hŒ£Locator
A network prefix that routes to a physical host. Locators
provide the topological location of an addressed node. ILA
locators are sixty-four bit prefixes.
”h]”(jP  )”}”(hŒLocator”h]”hŒLocator”…””}”(hj•  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´K)hj‘  ubj`  )”}”(hhh]”hï)”}”(hŒšA network prefix that routes to a physical host. Locators
provide the topological location of an addressed node. ILA
locators are sixty-four bit prefixes.”h]”hŒšA network prefix that routes to a physical host. Locators
provide the topological location of an addressed node. ILA
locators are sixty-four bit prefixes.”…””}”(hj¦  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K'hj£  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hj‘  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´K)hjŽ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hjŠ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hj;  ubj?  )”}”(hŒÛILA mapping
            A mapping of an ILA identifier to a locator (or to a
            locator and meta data). An ILA domain maintains a database
            that contains mappings for all destinations in the domain.
”h]”jE  )”}”(hhh]”jJ  )”}”(hŒ·ILA mapping
A mapping of an ILA identifier to a locator (or to a
locator and meta data). An ILA domain maintains a database
that contains mappings for all destinations in the domain.
”h]”(jP  )”}”(hŒILA mapping”h]”hŒILA mapping”…””}”(hj×  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´K.hjÓ  ubj`  )”}”(hhh]”hï)”}”(hŒªA mapping of an ILA identifier to a locator (or to a
locator and meta data). An ILA domain maintains a database
that contains mappings for all destinations in the domain.”h]”hŒªA mapping of an ILA identifier to a locator (or to a
locator and meta data). An ILA domain maintains a database
that contains mappings for all destinations in the domain.”…””}”(hjè  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K,hjå  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hjÓ  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´K.hjÐ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hjÌ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hj;  ubj?  )”}”(hX,  SIR address
            An IPv6 address composed of a SIR prefix (upper sixty-
            four bits) and an identifier (lower sixty-four bits).
            SIR addresses are visible to applications and provide a
            means for them to address nodes independent of their
            location.
”h]”jE  )”}”(hhh]”jJ  )”}”(hŒðSIR address
An IPv6 address composed of a SIR prefix (upper sixty-
four bits) and an identifier (lower sixty-four bits).
SIR addresses are visible to applications and provide a
means for them to address nodes independent of their
location.
”h]”(jP  )”}”(hŒSIR address”h]”hŒSIR address”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´K5hj  ubj`  )”}”(hhh]”hï)”}”(hŒãAn IPv6 address composed of a SIR prefix (upper sixty-
four bits) and an identifier (lower sixty-four bits).
SIR addresses are visible to applications and provide a
means for them to address nodes independent of their
location.”h]”hŒãAn IPv6 address composed of a SIR prefix (upper sixty-
four bits) and an identifier (lower sixty-four bits).
SIR addresses are visible to applications and provide a
means for them to address nodes independent of their
location.”…””}”(hj*  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K1hj'  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hj  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´K5hj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hj;  ubj?  )”}”(hŒÐILA address
            An IPv6 address composed of a locator (upper sixty-four
            bits) and an identifier (low order sixty-four bits). ILA
            addresses are never visible to an application.
”h]”jE  )”}”(hhh]”jJ  )”}”(hŒ¬ILA address
An IPv6 address composed of a locator (upper sixty-four
bits) and an identifier (low order sixty-four bits). ILA
addresses are never visible to an application.
”h]”(jP  )”}”(hŒILA address”h]”hŒILA address”…””}”(hj[  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´K:hjW  ubj`  )”}”(hhh]”hï)”}”(hŒŸAn IPv6 address composed of a locator (upper sixty-four
bits) and an identifier (low order sixty-four bits). ILA
addresses are never visible to an application.”h]”hŒŸAn IPv6 address composed of a locator (upper sixty-four
bits) and an identifier (low order sixty-four bits). ILA
addresses are never visible to an application.”…””}”(hjl  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K8hji  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hjW  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´K:hjT  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hjP  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hj;  ubj?  )”}”(hŒtILA host
            An end host that is capable of performing ILA translations
            on transmit or receive.
”h]”jE  )”}”(hhh]”jJ  )”}”(hŒ\ILA host
An end host that is capable of performing ILA translations
on transmit or receive.
”h]”(jP  )”}”(hŒILA host”h]”hŒILA host”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´K>hj™  ubj`  )”}”(hhh]”hï)”}”(hŒRAn end host that is capable of performing ILA translations
on transmit or receive.”h]”hŒRAn end host that is capable of performing ILA translations
on transmit or receive.”…””}”(hj®  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K=hj«  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hj™  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´K>hj–  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hj’  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hj;  ubj?  )”}”(hŒvILA router
            A network node that performs ILA translation and forwarding
            of translated packets.
”h]”jE  )”}”(hhh]”jJ  )”}”(hŒ^ILA router
A network node that performs ILA translation and forwarding
of translated packets.
”h]”(jP  )”}”(hŒ
ILA router”h]”hŒ
ILA router”…””}”(hjß  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´KBhjÛ  ubj`  )”}”(hhh]”hï)”}”(hŒRA network node that performs ILA translation and forwarding
of translated packets.”h]”hŒRA network node that performs ILA translation and forwarding
of translated packets.”…””}”(hjð  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KAhjí  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hjÛ  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´KBhjØ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hjÔ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hj;  ubj?  )”}”(hŒwILA forwarding cache
            A type of ILA router that only maintains a working set
            cache of mappings.
”h]”jE  )”}”(hhh]”jJ  )”}”(hŒ_ILA forwarding cache
A type of ILA router that only maintains a working set
cache of mappings.
”h]”(jP  )”}”(hŒILA forwarding cache”h]”hŒILA forwarding cache”…””}”(hj!  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´KFhj  ubj`  )”}”(hhh]”hï)”}”(hŒIA type of ILA router that only maintains a working set
cache of mappings.”h]”hŒIA type of ILA router that only maintains a working set
cache of mappings.”…””}”(hj2  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KEhj/  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hj  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´KFhj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hj;  ubj?  )”}”(hŒ—ILA node
            A network node capable of performing ILA translations. This
            can be an ILA router, ILA forwarding cache, or ILA host.

”h]”jE  )”}”(hhh]”jJ  )”}”(hŒILA node
A network node capable of performing ILA translations. This
can be an ILA router, ILA forwarding cache, or ILA host.

”h]”(jP  )”}”(hŒILA node”h]”hŒILA node”…””}”(hjc  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´KKhj_  ubj`  )”}”(hhh]”hï)”}”(hŒtA network node capable of performing ILA translations. This
can be an ILA router, ILA forwarding cache, or ILA host.”h]”hŒtA network node capable of performing ILA translations. This
can be an ILA router, ILA forwarding cache, or ILA host.”…””}”(hjt  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KIhjq  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hj_  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´KKhj\  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hjX  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hj;  ubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ-”uh1j9  h³hÇh´K!hj5  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j3  h³hÇh´K!hj"  h²hubeh}”(h]”Œila-terminology”ah ]”h"]”Œila terminology”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´KubhÉ)”}”(hhh]”(hÎ)”}”(hŒ	Operation”h]”hŒ	Operation”…””}”(hj³  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhj°  h²hh³hÇh´KNubhï)”}”(hŒ.There are two fundamental operations with ILA:”h]”hŒ.There are two fundamental operations with ILA:”…””}”(hjÁ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KPhj°  h²hubj4  )”}”(hŒÁ- Translate a SIR address to an ILA address. This is performed on ingress
  to an ILA overlay.

- Translate an ILA address to a SIR address. This is performed on egress
  from the ILA overlay.
”h]”j:  )”}”(hhh]”(j?  )”}”(hŒ[Translate a SIR address to an ILA address. This is performed on ingress
to an ILA overlay.
”h]”hï)”}”(hŒZTranslate a SIR address to an ILA address. This is performed on ingress
to an ILA overlay.”h]”hŒZTranslate a SIR address to an ILA address. This is performed on ingress
to an ILA overlay.”…””}”(hjÚ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KRhjÖ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hjÓ  ubj?  )”}”(hŒ]Translate an ILA address to a SIR address. This is performed on egress
from the ILA overlay.
”h]”hï)”}”(hŒ\Translate an ILA address to a SIR address. This is performed on egress
from the ILA overlay.”h]”hŒ\Translate an ILA address to a SIR address. This is performed on egress
from the ILA overlay.”…””}”(hjò  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KUhjî  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hjÓ  ubeh}”(h]”h ]”h"]”h$]”h&]”j   j¡  uh1j9  h³hÇh´KRhjÏ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j3  h³hÇh´KRhj°  h²hubhï)”}”(hŒæILA can be deployed either on end hosts or intermediate devices in the
network; these are provided by "ILA hosts" and "ILA routers" respectively.
Configuration and datapath for these two points of deployment is somewhat
different.”h]”hŒîILA can be deployed either on end hosts or intermediate devices in the
network; these are provided by â€œILA hostsâ€ and â€œILA routersâ€ respectively.
Configuration and datapath for these two points of deployment is somewhat
different.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KXhj°  h²hubhï)”}”(hŒhThe diagram below illustrates the flow of packets through ILA as well
as showing ILA hosts and routers::”h]”hŒgThe diagram below illustrates the flow of packets through ILA as well
as showing ILA hosts and routers:”…””}”(hj   h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K]hj°  h²hubhŒliteral_block”“”)”}”(hXa   +--------+                                                +--------+
 | Host A +-+                                         +--->| Host B |
 |        | |              (2) ILA                   (')   |        |
 +--------+ |            ...addressed....           (   )  +--------+
            V  +---+--+  .  packet      .  +---+--+  (_)
(1) SIR     |  | ILA  |----->-------->---->| ILA  |   |   (3) SIR
 addressed  +->|router|  .              .  |router|->-+    addressed
 packet        +---+--+  .     IPv6     .  +---+--+        packet
                /        .    Network   .
               /         .              .   +--+-++--------+
 +--------+   /          .              .   |ILA ||  Host  |
 |  Host  +--+           .              .- -|host||        |
 |        |              .              .   +--+-++--------+
 +--------+              ................”h]”hXa   +--------+                                                +--------+
 | Host A +-+                                         +--->| Host B |
 |        | |              (2) ILA                   (')   |        |
 +--------+ |            ...addressed....           (   )  +--------+
            V  +---+--+  .  packet      .  +---+--+  (_)
(1) SIR     |  | ILA  |----->-------->---->| ILA  |   |   (3) SIR
 addressed  +->|router|  .              .  |router|->-+    addressed
 packet        +---+--+  .     IPv6     .  +---+--+        packet
                /        .    Network   .
               /         .              .   +--+-++--------+
 +--------+   /          .              .   |ILA ||  Host  |
 |  Host  +--+           .              .- -|host||        |
 |        |              .              .   +--+-++--------+
 +--------+              ................”…””}”hj0  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆuh1j.  h³hÇh´K`hj°  h²hubeh}”(h]”Œ	operation”ah ]”h"]”Œ	operation”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´KNubhÉ)”}”(hhh]”(hÎ)”}”(hŒTransport checksum handling”h]”hŒTransport checksum handling”…””}”(hjI  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhjF  h²hh³hÇh´Kqubhï)”}”(hX=  When an address is translated by ILA, an encapsulated transport checksum
that includes the translated address in a pseudo header may be rendered
incorrect on the wire. This is a problem for intermediate devices,
including checksum offload in NICs, that process the checksum. There are
three options to deal with this:”h]”hX=  When an address is translated by ILA, an encapsulated transport checksum
that includes the translated address in a pseudo header may be rendered
incorrect on the wire. This is a problem for intermediate devices,
including checksum offload in NICs, that process the checksum. There are
three options to deal with this:”…””}”(hjW  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KshjF  h²hubj:  )”}”(hhh]”(j?  )”}”(hŒ±no action     Allow the checksum to be incorrect on the wire. Before
              a receiver verifies a checksum the ILA to SIR address
              translation must be done.
”h]”jE  )”}”(hhh]”jJ  )”}”(hŒ•no action     Allow the checksum to be incorrect on the wire. Before
a receiver verifies a checksum the ILA to SIR address
translation must be done.
”h]”(jP  )”}”(hŒDno action     Allow the checksum to be incorrect on the wire. Before”h]”hŒDno action     Allow the checksum to be incorrect on the wire. Before”…””}”(hjs  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´K{hjo  ubj`  )”}”(hhh]”hï)”}”(hŒOa receiver verifies a checksum the ILA to SIR address
translation must be done.”h]”hŒOa receiver verifies a checksum the ILA to SIR address
translation must be done.”…””}”(hj„  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Kzhj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hjo  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´K{hjl  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hjh  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hje  h²hh³Nh´Nubj?  )”}”(hX  adjust transport checksum
              When ILA translation is performed the packet is parsed
              and if a transport layer checksum is found then it is
              adjusted to reflect the correct checksum per the
              translated address.
”h]”jE  )”}”(hhh]”jJ  )”}”(hŒÌadjust transport checksum
When ILA translation is performed the packet is parsed
and if a transport layer checksum is found then it is
adjusted to reflect the correct checksum per the
translated address.
”h]”(jP  )”}”(hŒadjust transport checksum”h]”hŒadjust transport checksum”…””}”(hjµ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´Khj±  ubj`  )”}”(hhh]”hï)”}”(hŒ±When ILA translation is performed the packet is parsed
and if a transport layer checksum is found then it is
adjusted to reflect the correct checksum per the
translated address.”h]”hŒ±When ILA translation is performed the packet is parsed
and if a transport layer checksum is found then it is
adjusted to reflect the correct checksum per the
translated address.”…””}”(hjÆ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K~hjÃ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hj±  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´Khj®  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hjª  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hje  h²hh³Nh´Nubj?  )”}”(hXÊ  checksum neutral mapping
              When an address is translated the difference can be offset
              elsewhere in a part of the packet that is covered by
              the checksum. The low order sixteen bits of the identifier
              are used. This method is preferred since it doesn't require
              parsing a packet beyond the IP header and in most cases the
              adjustment can be precomputed and saved with the mapping.
”h]”jE  )”}”(hhh]”jJ  )”}”(hXv  checksum neutral mapping
When an address is translated the difference can be offset
elsewhere in a part of the packet that is covered by
the checksum. The low order sixteen bits of the identifier
are used. This method is preferred since it doesn't require
parsing a packet beyond the IP header and in most cases the
adjustment can be precomputed and saved with the mapping.
”h]”(jP  )”}”(hŒchecksum neutral mapping”h]”hŒchecksum neutral mapping”…””}”(hj÷  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jO  h³hÇh´K‰hjó  ubj`  )”}”(hhh]”hï)”}”(hX\  When an address is translated the difference can be offset
elsewhere in a part of the packet that is covered by
the checksum. The low order sixteen bits of the identifier
are used. This method is preferred since it doesn't require
parsing a packet beyond the IP header and in most cases the
adjustment can be precomputed and saved with the mapping.”h]”hX^  When an address is translated the difference can be offset
elsewhere in a part of the packet that is covered by
the checksum. The low order sixteen bits of the identifier
are used. This method is preferred since it doesnâ€™t require
parsing a packet beyond the IP header and in most cases the
adjustment can be precomputed and saved with the mapping.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K„hj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j_  hjó  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jI  h³hÇh´K‰hjð  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jD  hjì  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j>  hje  h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”j   j¡  uh1j9  h³hÇh´KyhjF  h²hubhï)”}”(hX  Note that the checksum neutral adjustment affects the low order sixteen
bits of the identifier. When ILA to SIR address translation is done on
egress the low order bits are restored to the original value which
restores the identifier as it was originally sent.”h]”hX  Note that the checksum neutral adjustment affects the low order sixteen
bits of the identifier. When ILA to SIR address translation is done on
egress the low order bits are restored to the original value which
restores the identifier as it was originally sent.”…””}”(hj4  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K‹hjF  h²hubeh}”(h]”Œtransport-checksum-handling”ah ]”h"]”Œtransport checksum handling”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´KqubhÉ)”}”(hhh]”(hÎ)”}”(hŒIdentifier types”h]”hŒIdentifier types”…””}”(hjM  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhjJ  h²hh³hÇh´K’ubhï)”}”(hŒCILA defines different types of identifiers for different use cases.”h]”hŒCILA defines different types of identifiers for different use cases.”…””}”(hj[  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K”hjJ  h²hubhï)”}”(hŒThe defined types are:”h]”hŒThe defined types are:”…””}”(hji  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K–hjJ  h²hubj4  )”}”(hX  0: interface identifier

1: locally unique identifier

2: virtual networking identifier for IPv4 address

3: virtual networking identifier for IPv6 unicast address

4: virtual networking identifier for IPv6 multicast address

5: non-local address identifier
”h]”(hï)”}”(hŒ0: interface identifier”h]”hŒ0: interface identifier”…””}”(hj{  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K˜hjw  ubhï)”}”(hŒ1: locally unique identifier”h]”hŒ1: locally unique identifier”…””}”(hj‰  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Kšhjw  ubhï)”}”(hŒ12: virtual networking identifier for IPv4 address”h]”hŒ12: virtual networking identifier for IPv4 address”…””}”(hj—  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Kœhjw  ubhï)”}”(hŒ93: virtual networking identifier for IPv6 unicast address”h]”hŒ93: virtual networking identifier for IPv6 unicast address”…””}”(hj¥  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Kžhjw  ubhï)”}”(hŒ;4: virtual networking identifier for IPv6 multicast address”h]”hŒ;4: virtual networking identifier for IPv6 multicast address”…””}”(hj³  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K hjw  ubhï)”}”(hŒ5: non-local address identifier”h]”hŒ5: non-local address identifier”…””}”(hjÁ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K¢hjw  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j3  h³hÇh´K˜hjJ  h²hubhï)”}”(hŒ›In the current implementation of kernel ILA only locally unique identifiers
(LUID) are supported. LUID allows for a generic, unformatted 64 bit
identifier.”h]”hŒ›In the current implementation of kernel ILA only locally unique identifiers
(LUID) are supported. LUID allows for a generic, unformatted 64 bit
identifier.”…””}”(hjÕ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K¤hjJ  h²hubeh}”(h]”Œidentifier-types”ah ]”h"]”Œidentifier types”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´K’ubhÉ)”}”(hhh]”(hÎ)”}”(hŒIdentifier formats”h]”hŒIdentifier formats”…””}”(hjî  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhjë  h²hh³hÇh´Kªubhï)”}”(hŒºKernel ILA supports two optional fields in an identifier for formatting:
"C-bit" and "identifier type". The presence of these fields is determined
by configuration as demonstrated below.”h]”hŒÂKernel ILA supports two optional fields in an identifier for formatting:
â€œC-bitâ€ and â€œidentifier typeâ€. The presence of these fields is determined
by configuration as demonstrated below.”…””}”(hjü  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K¬hjë  h²hubhï)”}”(hŒIf the identifier type is present it occupies the three highest order
bits of an identifier. The possible values are given in the above list.”h]”hŒIf the identifier type is present it occupies the three highest order
bits of an identifier. The possible values are given in the above list.”…””}”(hj
  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K°hjë  h²hubhï)”}”(hŒ¦If the C-bit is present,  this is used as an indication that checksum
neutral mapping has been done. The C-bit can only be set in an
ILA address, never a SIR address.”h]”hŒ¦If the C-bit is present,  this is used as an indication that checksum
neutral mapping has been done. The C-bit can only be set in an
ILA address, never a SIR address.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K³hjë  h²hubhï)”}”(hŒ§In the simplest format the identifier types, C-bit, and checksum
adjustment value are not present so an identifier is considered an
unstructured sixty-four bit value::”h]”hŒ¦In the simplest format the identifier types, C-bit, and checksum
adjustment value are not present so an identifier is considered an
unstructured sixty-four bit value:”…””}”(hj&  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´K·hjë  h²hubj/  )”}”(hXI  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                            Identifier                         |
+                                                               +
|                                                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+”h]”hXI  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                            Identifier                         |
+                                                               +
|                                                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+”…””}”hj4  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆuh1j.  h³hÇh´K»hjë  h²hubhï)”}”(hŒáThe checksum neutral adjustment may be configured to always be
present using neutral-map-auto. In this case there is no C-bit, but the
checksum adjustment is in the low order 16 bits. The identifier is
still sixty-four bits::”h]”hŒàThe checksum neutral adjustment may be configured to always be
present using neutral-map-auto. In this case there is no C-bit, but the
checksum adjustment is in the low order 16 bits. The identifier is
still sixty-four bits:”…””}”(hjB  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KÁhjë  h²hubj/  )”}”(hXI  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                            Identifier                         |
|                               +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                               |  Checksum-neutral adjustment  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+”h]”hXI  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                            Identifier                         |
|                               +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                               |  Checksum-neutral adjustment  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+”…””}”hjP  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆuh1j.  h³hÇh´KÆhjë  h²hubhï)”}”(hŒ{The C-bit may used to explicitly indicate that checksum neutral
mapping has been applied to an ILA address. The format is::”h]”hŒzThe C-bit may used to explicitly indicate that checksum neutral
mapping has been applied to an ILA address. The format is:”…””}”(hj^  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KÌhjë  h²hubj/  )”}”(hXI  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|     |C|                    Identifier                         |
|     +-+                       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                               |  Checksum-neutral adjustment  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+”h]”hXI  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|     |C|                    Identifier                         |
|     +-+                       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                               |  Checksum-neutral adjustment  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+”…””}”hjl  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆuh1j.  h³hÇh´KÏhjë  h²hubhï)”}”(hŒÿThe identifier type field may be present to indicate the identifier
type. If it is not present then the type is inferred based on mapping
configuration. The checksum neutral adjustment may automatically
used with the identifier type as illustrated below::”h]”hŒþThe identifier type field may be present to indicate the identifier
type. If it is not present then the type is inferred based on mapping
configuration. The checksum neutral adjustment may automatically
used with the identifier type as illustrated below:”…””}”(hjz  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´KÕhjë  h²hubj/  )”}”(hXI  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type|                      Identifier                         |
+-+-+-+                         +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                               |  Checksum-neutral adjustment  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+”h]”hXI  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type|                      Identifier                         |
+-+-+-+                         +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                               |  Checksum-neutral adjustment  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+”…””}”hjˆ  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆuh1j.  h³hÇh´KÚhjë  h²hubhï)”}”(hŒfIf the identifier type and the C-bit can be present simultaneously so
the identifier format would be::”h]”hŒeIf the identifier type and the C-bit can be present simultaneously so
the identifier format would be:”…””}”(hj–  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Kàhjë  h²hubj/  )”}”(hXI  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type|C|                    Identifier                         |
+-+-+-+-+                       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                               |  Checksum-neutral adjustment  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+”h]”hXI  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type|C|                    Identifier                         |
+-+-+-+-+                       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                               |  Checksum-neutral adjustment  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+”…””}”hj¤  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆuh1j.  h³hÇh´Kãhjë  h²hubeh}”(h]”Œidentifier-formats”ah ]”h"]”Œidentifier formats”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´KªubhÉ)”}”(hhh]”(hÎ)”}”(hŒConfiguration”h]”hŒConfiguration”…””}”(hj½  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhjº  h²hh³hÇh´Këubhï)”}”(hŒÏThere are two methods to configure ILA mappings. One is by using LWT routes
and the other is ila_xlat (called from NFHOOK PREROUTING hook). ila_xlat
is intended to be used in the receive path for ILA hosts .”h]”hŒÏThere are two methods to configure ILA mappings. One is by using LWT routes
and the other is ila_xlat (called from NFHOOK PREROUTING hook). ila_xlat
is intended to be used in the receive path for ILA hosts .”…””}”(hjË  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Kíhjº  h²hubhï)”}”(hŒjAn ILA router has also been implemented in XDP. Description of that is
outside the scope of this document.”h]”hŒjAn ILA router has also been implemented in XDP. Description of that is
outside the scope of this document.”…””}”(hjÙ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Kñhjº  h²hubhï)”}”(hŒ#The usage of for ILA LWT routes is:”h]”hŒ#The usage of for ILA LWT routes is:”…””}”(hjç  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Kôhjº  h²hubhï)”}”(hŒKip route add DEST/128 encap ila LOC csum-mode MODE ident-type TYPE via ADDR”h]”hŒKip route add DEST/128 encap ila LOC csum-mode MODE ident-type TYPE via ADDR”…””}”(hjõ  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Köhjº  h²hubhï)”}”(hX)  Destination (DEST) can either be a SIR address (for an ILA host or ingress
ILA router) or an ILA address (egress ILA router). LOC is the sixty-four
bit locator (with format W:X:Y:Z) that overwrites the upper sixty-four
bits of the destination address.  Checksum MODE is one of "no-action",
"adj-transport", "neutral-map", and "neutral-map-auto". If neutral-map is
set then the C-bit will be present. Identifier TYPE one of "luid" or
"use-format." In the case of use-format, the identifier type field is
present and the effective type is taken from that.”h]”hXA  Destination (DEST) can either be a SIR address (for an ILA host or ingress
ILA router) or an ILA address (egress ILA router). LOC is the sixty-four
bit locator (with format W:X:Y:Z) that overwrites the upper sixty-four
bits of the destination address.  Checksum MODE is one of â€œno-actionâ€,
â€œadj-transportâ€, â€œneutral-mapâ€, and â€œneutral-map-autoâ€. If neutral-map is
set then the C-bit will be present. Identifier TYPE one of â€œluidâ€ or
â€œuse-format.â€ In the case of use-format, the identifier type field is
present and the effective type is taken from that.”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Køhjº  h²hubhï)”}”(hŒThe usage of ila_xlat is:”h]”hŒThe usage of ila_xlat is:”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Mhjº  h²hubhï)”}”(hŒAip ila add loc_match MATCH loc LOC csum-mode MODE ident-type TYPE”h]”hŒAip ila add loc_match MATCH loc LOC csum-mode MODE ident-type TYPE”…””}”(hj  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Mhjº  h²hubhï)”}”(hŒçMATCH indicates the incoming locator that must be matched to apply
a the translaiton. LOC is the locator that overwrites the upper
sixty-four bits of the destination address. MODE and TYPE have the
same meanings as described above.”h]”hŒçMATCH indicates the incoming locator that must be matched to apply
a the translaiton. LOC is the locator that overwrites the upper
sixty-four bits of the destination address. MODE and TYPE have the
same meanings as described above.”…””}”(hj-  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hîh³hÇh´Mhjº  h²hubeh}”(h]”Œconfiguration”ah ]”h"]”Œconfiguration”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´KëubhÉ)”}”(hhh]”(hÎ)”}”(hŒSome examples”h]”hŒSome examples”…””}”(hjF  h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÍhjC  h²hh³hÇh´Mubj/  )”}”(hX¥  # Configure an ILA route that uses checksum neutral mapping as well
# as type field. Note that the type field is set in the SIR address
# (the 2000 implies type is 1 which is LUID).
ip route add 3333:0:0:1:2000:0:1:87/128 encap ila 2001:0:87:0 \
     csum-mode neutral-map ident-type use-format

# Configure an ILA LWT route that uses auto checksum neutral mapping
# (no C-bit) and configure identifier type to be LUID so that the
# identifier type field will not be present.
ip route add 3333:0:0:1:2000:0:2:87/128 encap ila 2001:0:87:1 \
     csum-mode neutral-map-auto ident-type luid

ila_xlat configuration

# Configure an ILA to SIR mapping that matches a locator and overwrites
# it with a SIR address (3333:0:0:1 in this example). The C-bit and
# identifier field are used.
ip ila add loc_match 2001:0:119:0 loc 3333:0:0:1 \
    csum-mode neutral-map-auto ident-type use-format

# Configure an ILA to SIR mapping where checksum neutral is automatically
# set without the C-bit and the identifier type is configured to be LUID
# so that the identifier type field is not present.
ip ila add loc_match 2001:0:119:0 loc 3333:0:0:1 \
    csum-mode neutral-map-auto ident-type use-format”h]”hX¥  # Configure an ILA route that uses checksum neutral mapping as well
# as type field. Note that the type field is set in the SIR address
# (the 2000 implies type is 1 which is LUID).
ip route add 3333:0:0:1:2000:0:1:87/128 encap ila 2001:0:87:0 \
     csum-mode neutral-map ident-type use-format

# Configure an ILA LWT route that uses auto checksum neutral mapping
# (no C-bit) and configure identifier type to be LUID so that the
# identifier type field will not be present.
ip route add 3333:0:0:1:2000:0:2:87/128 encap ila 2001:0:87:1 \
     csum-mode neutral-map-auto ident-type luid

ila_xlat configuration

# Configure an ILA to SIR mapping that matches a locator and overwrites
# it with a SIR address (3333:0:0:1 in this example). The C-bit and
# identifier field are used.
ip ila add loc_match 2001:0:119:0 loc 3333:0:0:1 \
    csum-mode neutral-map-auto ident-type use-format

# Configure an ILA to SIR mapping where checksum neutral is automatically
# set without the C-bit and the identifier type is configured to be LUID
# so that the identifier type field is not present.
ip ila add loc_match 2001:0:119:0 loc 3333:0:0:1 \
    csum-mode neutral-map-auto ident-type use-format”…””}”hjT  sbah}”(h]”h ]”h"]”h$]”h&]”hÅhÆuh1j.  h³hÇh´MhjC  h²hubeh}”(h]”Œsome-examples”ah ]”h"]”Œsome examples”ah$]”h&]”uh1hÈhhÊh²hh³hÇh´Mubeh}”(h]”Œ!identifier-locator-addressing-ila”ah ]”h"]”Œ#identifier locator addressing (ila)”ah$]”h&]”uh1hÈhhh²hh³hÇh´Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”hÇuh1hŒcurrent_source”NŒcurrent_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(hÍNŒ	generator”NŒ	datestamp”NŒsource_link”NŒ
source_url”NŒtoc_backlinks”Œentry”Œfootnote_backlinks”KŒsectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒstrip_classes”NŒreport_level”KŒ
halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ	traceback”ˆŒinput_encoding”Œ	utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”j•  Œerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œlanguage_code”Œen”Œrecord_dependencies”NŒconfig”NŒ	id_prefix”hŒauto_id_prefix”Œid”Œdump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”hÇŒ_destination”NŒ_config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒraw_enabled”KŒline_length_limit”M'Œpep_references”NŒpep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒrfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ	tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œsmart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œdocinfo_xform”KŒsectsubtitle_xform”‰Œimage_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”(jo  jl  j  j  j­  jª  jC  j@  jG  jD  jè  jå  j·  j´  j@  j=  jg  jd  uŒ	nametypes”}”(jo  ‰j  ‰j­  ‰jC  ‰jG  ‰jè  ‰j·  ‰j@  ‰jg  ‰uh}”(jl  hÊj  hÝjª  j"  j@  j°  jD  jF  jå  jJ  j´  jë  j=  jº  jd  jC  uŒfootnote_refs”}”Œcitation_refs”}”Œautofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ	footnotes”]”Œ	citations”]”Œautofootnote_start”KŒsymbol_footnote_start”K Œ
id_counter”Œcollections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œtransformer”NŒinclude_log”]”Œ
decoration”Nh²hub.