< draft-ietf-bess-deployment-guide-ipv4nlri-ipv6nh-01.txt   draft-ietf-bess-deployment-guide-ipv4nlri-ipv6nh-02.txt >
BESS Working Group G. Mishra BESS Working Group G. Mishra
Internet-Draft Verizon Inc. Internet-Draft Verizon Inc.
Intended status: Best Current Practice M. Mishra Intended status: Best Current Practice M. Mishra
Expires: December 9, 2021 Cisco Systems Expires: January 13, 2022 Cisco Systems
J. Tantsura J. Tantsura
Microsoft, Inc.
S. Madhavi S. Madhavi
Juniper Networks, Inc. Juniper Networks, Inc.
Q. Yang Q. Yang
Arista Networks Arista Networks
A. Simpson A. Simpson
Nokia Nokia
S. Chen S. Chen
Huawei Technologies Huawei Technologies
June 7, 2021 July 12, 2021
Deployment Guidelines for Edge Peering IPv4-NLRI with IPv6-NH Deployment Guidelines for Edge Peering IPv4-NLRI with IPv6-NH
draft-ietf-bess-deployment-guide-ipv4nlri-ipv6nh-01 draft-ietf-bess-deployment-guide-ipv4nlri-ipv6nh-02
Abstract Abstract
As Enterprises and Service Providers upgrade their brown field or As Enterprises and Service Providers upgrade their brown field or
green field MPLS/SR core to an IPv6 transport, Multiprotocol BGP (MP- green field MPLS/SR core to an IPv6 transport, Multiprotocol BGP (MP-
BGP)now plays an important role in the transition of their Provider BGP)now plays an important role in the transition of their Provider
(P) core network as well as Provider Edge (PE) Edge network from IPv4 (P) core network as well as Provider Edge (PE) Edge network from IPv4
to IPv6. Operators must be able to continue to support IPv4 to IPv6. Operators must be able to continue to support IPv4
customers when both the Core and Edge networks are IPv6-Only. customers when both the Core and Edge networks are IPv6-Only.
skipping to change at page 2, line 4 skipping to change at page 2, line 5
an IPv6 address need only be configured on the PE and CE interface an IPv6 address need only be configured on the PE and CE interface
for both IPv4 and IPv6 packet forwarding. for both IPv4 and IPv6 packet forwarding.
This document provides a much needed solution for Internet Exchange This document provides a much needed solution for Internet Exchange
Point (IXP) that are facing IPv4 address depletion at large peering Point (IXP) that are facing IPv4 address depletion at large peering
points. With this design, IXP can now deploy PE-CE IPv6-Only eBGP points. With this design, IXP can now deploy PE-CE IPv6-Only eBGP
Edge peering design to eliminate IPv4 provisioning at the Edge. This Edge peering design to eliminate IPv4 provisioning at the Edge. This
core and edge IPv6-Only peering design paradigm change can apply to core and edge IPv6-Only peering design paradigm change can apply to
any eBGP peering, public internet or private, which can be either any eBGP peering, public internet or private, which can be either
Core networks, Data Center networks, Access networks or can be any Core networks, Data Center networks, Access networks or can be any
eBGP peering scenario. This document provides interoperability test eBGP peering scenario. This document provides vendor specific test
cases for the IPv6-Only peering design as well as test results cases for the IPv6-Only peering design as well as test results for
between five major vendors stakeholders in the routing and switching the five major vendors stakeholders in the routing and switching
indusrty, Cisco, Juniper, Arista, Nokia and Huawei. With the test indusrty, Cisco, Juniper, Arista, Nokia and Huawei. With the test
results provided for the IPv6-Only Edge peering design, the goal is results provided for the IPv6-Only Edge peering design, the goal is
that all other vendors around the world that have not been tested that all other vendors around the world that have not been tested
will begin to adopt and implement this new Best Current Practice for will begin to adopt and implement this new Best Current Practice for
eBGP IPv6-Only Edge peering. eBGP IPv6-Only Edge peering.
As this issue with IXP IPv4 address depletion is a critical issue As this issue with IXP IPv4 address depletion is a critical issue
around the world, it is imperative for an immediate solution that can around the world, it is imperative for an immediate solution that can
be implemented quickly. This Best Current Practice IPv6-only eBGP be implemented quickly. This Best Current Practice IPv6-only eBGP
peering design specification will help proliferate IPv6-Only peering design specification will help proliferate IPv6-Only
skipping to change at page 2, line 38 skipping to change at page 2, line 39
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on December 9, 2021. This Internet-Draft will expire on January 13, 2022.
Copyright Notice Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
skipping to change at page 3, line 25 skipping to change at page 3, line 26
4.3. IPv6-Only Edge Peering Design . . . . . . . . . . . . . . 8 4.3. IPv6-Only Edge Peering Design . . . . . . . . . . . . . . 8
4.3.1. IPv6-Only Edge Peering Packet Walk . . . . . . . . . 8 4.3.1. IPv6-Only Edge Peering Packet Walk . . . . . . . . . 8
4.3.2. 6to4 Softwire IPv4-Only Core packet walk . . . . . . 9 4.3.2. 6to4 Softwire IPv4-Only Core packet walk . . . . . . 9
4.3.3. 4to6 Softwire IPv6-Only Core packet walk . . . . . . 10 4.3.3. 4to6 Softwire IPv6-Only Core packet walk . . . . . . 10
4.4. RFC5549 and RFC8950 Applicability . . . . . . . . . . . . 13 4.4. RFC5549 and RFC8950 Applicability . . . . . . . . . . . . 13
4.4.1. IPv6-Only Edge Peering design next-hop encoding . . . 13 4.4.1. IPv6-Only Edge Peering design next-hop encoding . . . 13
4.4.2. RFC8950 updates to RFC5549 applicability . . . . . . 13 4.4.2. RFC8950 updates to RFC5549 applicability . . . . . . 13
5. IPv6-Only Design Edge E2E Test Cases . . . . . . . . . . . . 14 5. IPv6-Only Design Edge E2E Test Cases . . . . . . . . . . . . 14
5.1. Test-1 IPv6-Only PE-CE Global Table over IPv4-Only Core . 14 5.1. Test-1 IPv6-Only PE-CE Global Table over IPv4-Only Core . 14
5.2. Test-2 E2E IPv6-Only PE-CE VPN over IPv4-Only Core . . . 15 5.2. Test-2 E2E IPv6-Only PE-CE VPN over IPv4-Only Core . . . 15
5.3. Test-3 IPv6-Only PE-CE Global Table over IPv6-Only Core . 15 5.3. Test-3 IPv6-Only PE-CE Global Table over IPv6-Only Core . 16
5.4. Test-4 IPv6-Only PE-CE VPN over IPv6-Only Core . . . . . 16 5.4. Test-4 IPv6-Only PE-CE VPN over IPv6-Only Core . . . . . 17
5.5. IPv6-Only PE-CE Operational Considerations Testing . . . 16 5.5. IPv6-Only PE-CE Operational Considerations Testing . . . 18
6. Operational Considerations . . . . . . . . . . . . . . . . . 17 6. Operational Considerations . . . . . . . . . . . . . . . . . 18
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18 7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 19
8. Security Considerations . . . . . . . . . . . . . . . . . . . 18 8. Security Considerations . . . . . . . . . . . . . . . . . . . 19
9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 18 9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 20
10. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 18 10. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 20
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 18 11. References . . . . . . . . . . . . . . . . . . . . . . . . . 20
11.1. Normative References . . . . . . . . . . . . . . . . . . 18 11.1. Normative References . . . . . . . . . . . . . . . . . . 20
11.2. Informative References . . . . . . . . . . . . . . . . . 19 11.2. Informative References . . . . . . . . . . . . . . . . . 21
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 20 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 22
1. Introduction 1. Introduction
As Enterprises and Service Providers upgrade their brown field or As Enterprises and Service Providers upgrade their brown field or
green field MPLS/SR core to an IPv6 transport such as MPLS LDPv6, SR- green field MPLS/SR core to an IPv6 transport such as MPLS LDPv6, SR-
MPLSv6 or SRv6, Multiprotocol BGP (MP-BGP) now plays an important MPLSv6 or SRv6, Multiprotocol BGP (MP-BGP) now plays an important
role in the transition of the Provider (P) core networks and Provider role in the transition of the Provider (P) core networks and Provider
Edge (PE) edge networks from IPv4 to IPv6. Operators have a Edge (PE) edge networks from IPv4 to IPv6. Operators have a
requirement to support IPv4 customers and must be able to support requirement to support IPv4 customers and must be able to support
IPv4 address family and Sub-Address-Family Virtual Private Network IPv4 address family and Sub-Address-Family Virtual Private Network
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carrying IPv4 NLRI IPV4 <2/1>, VPN-IPV4 <2/128>, and Multicasat VPN carrying IPv4 NLRI IPV4 <2/1>, VPN-IPV4 <2/128>, and Multicasat VPN
<2/129> over an IPv6 next hop. <2/129> over an IPv6 next hop.
This document provides a much needed solution for Internet Exchange This document provides a much needed solution for Internet Exchange
Point (IXP) that are facing IPv4 address depletion at large peering Point (IXP) that are facing IPv4 address depletion at large peering
points. With this design, IXP can now use deploy PE-CE IPv6-Only points. With this design, IXP can now use deploy PE-CE IPv6-Only
eBGP Edge peering design to eliminate IPv4 provisioning at the Edge. eBGP Edge peering design to eliminate IPv4 provisioning at the Edge.
This core and edge IPv6-Only peering design paradigm change can apply This core and edge IPv6-Only peering design paradigm change can apply
to any eBGP peering, public internet or private, which can be either to any eBGP peering, public internet or private, which can be either
Core networks, Data Center networks, Access networks or can be any Core networks, Data Center networks, Access networks or can be any
eBGP peering scenario. This document provides interoperability test eBGP peering scenario. This document provides detailed vendor
cases for the IPv6-Only peering design as well as successful test specific test cases and test results for the IPv6-Only peering design
results between five major vendors stakeholders in the routing and as well as successful test results between five major vendors
switching indusrty, Cisco, Juniper, Arista, Nokia and Huawei. With stakeholders in the routing and switching indusrty, Cisco, Juniper,
the test results provided for the IPv6-Only Edge peering design, the Arista, Nokia and Huawei. With the test results provided for the
goal is that all other vendors around the world that have not been IPv6-Only Edge peering design, the goal is that all other vendors
tested will begin to adopt and implement this new best practice for around the world that have not been tested will begin to adopt and
eBGP IPv6-Only Edge peering. implement this new best practice for eBGP IPv6-Only Edge peering.
As this issue with IXP address depletion is a critical issue around As this issue with IXP address depletion is a critical issue around
the world, it is imperative for an immediate solution that can be the world, it is imperative for an immediate solution that can be
implemented quickly. This best practice IPv6-only eBGP peering implemented quickly. This best practice IPv6-only eBGP peering
design specification will help proliferate IPv6-Only deployments at design specification will help proliferate IPv6-Only deployments at
the eBGP Edge network peering points starting immediately at a the eBGP Edge network peering points starting immediately at a
minimum with operators around the world using Cisco, Juniper, Arista, minimum with operators around the world using Cisco, Juniper, Arista,
Nokia and Huawei. Nokia and Huawei.
2. Requirements Language 2. Requirements Language
skipping to change at page 15, line 5 skipping to change at page 15, line 5
| | | | | \ | | | | | | | | | \ | | | |
| CE |--| PE |--\ IPv4-Only Core |----| PE |---| CE | | CE |--| PE |--\ IPv4-Only Core |----| PE |---| CE |
| | | | \0=========Underlay =======0| | | | | | | | | \0=========Underlay =======0| | | | |
+----+ +----+ \ __/ +------+ +-----+ +----+ +----+ \ __/ +------+ +-----+
IPv6 BGP peer \ MPLS / SR domain / IPv6 BGP peer IPv6 BGP peer \ MPLS / SR domain / IPv6 BGP peer
IPv4 forwarding \__ __ / IPv4 forwarding IPv4 forwarding \__ __ / IPv4 forwarding
IPv6 forwarding \_______/ \_____/ IPv6 forwarding IPv6 forwarding \_______/ \_____/ IPv6 forwarding
Figure 7: Test-1 E2E IPv6-Only PE-CE Global Table 6to4 Softwire Figure 7: Test-1 E2E IPv6-Only PE-CE Global Table 6to4 Softwire
Cisco, Juniper, Arista, Nokia, Huawei Test case Results documented Cisco, Juniper, Arista, Nokia, Huawei code and platform and test
here. results.
Cisco: Edge Router- XR ASR 9910 IOS XR 7.4.1, Core Router- NCS 6000
7.2.2, CRS-X 6.7.4
Juniper: Edge Router- MX platform MX480, MX960, Core Router- PTX
Platform PTX5000, PTC10K8 (JUNOS and EVO) Release 20.4R2
Tested v4 edge over v6 core in a virtual setup using vMX platforrm
and 20.4R2 and LDPv6 as underlay, but there were some data plane
forwarding issues. Tested same setup on latest release 21.4 and it
worked. Investigating what the minimum version is for this setup to
work.
Arista:
Nokia: Edge and Core-7750 Service Router, Release R21
Huawei: Edge and Core-VRPv8, Release VRP-V800R020C10
5.2. Test-2 E2E IPv6-Only PE-CE VPN over IPv4-Only Core 5.2. Test-2 E2E IPv6-Only PE-CE VPN over IPv4-Only Core
________ ________
IPv6-Only _____ / \ IPv6-Only IPv6-Only _____ / \ IPv6-Only
PE / CE / \__/ \___ PE / CE PE / CE / \__/ \___ PE / CE
+----+ +----+ / \ +------+ +-----+ +----+ +----+ / \ +------+ +-----+
| | | | | 0====VPN Overlay Tunnel ==0| | | | | | | | | | 0====VPN Overlay Tunnel ==0| | | | |
| | | | | \ | | | | | | | | | \ | | | |
| CE |--| PE |--\ IPv4-Only Core |----| PE |---| CE | | CE |--| PE |--\ IPv4-Only Core |----| PE |---| CE |
| | | | \0=========Underlay =======0| | | | | | | | | \0=========Underlay =======0| | | | |
+----+ +----+ \ __/ +------+ +-----+ +----+ +----+ \ __/ +------+ +-----+
IPv6 BGP peer \ MPLS / SR domain / IPv6 BGP peer IPv6 BGP peer \ MPLS / SR domain / IPv6 BGP peer
IPv4 forwarding \__ __ / IPv4 forwarding IPv4 forwarding \__ __ / IPv4 forwarding
IPv6 forwarding \_______/ \_____/ IPv6 forwarding IPv6 forwarding \_______/ \_____/ IPv6 forwarding
Figure 8: Test-2 E2E IPv6-Only PE-CE Design VPN 6to4 Softwire Figure 8: Test-2 E2E IPv6-Only PE-CE Design VPN 6to4 Softwire
Cisco, Juniper, Arista, Nokia, Huawei Test case Results documented Cisco, Juniper, Arista, Nokia, Huawei code and platform and test
here. results.
Cisco: Edge Router- XR ASR 9910 IOS XR 7.4.1, Core Router- NCS 6000
7.2.2, CRS-X 6.7.4
Juniper: Edge Router- MX platform MX480, MX960, Core Router- PTX
Platform PTX5000, PTC10K8 (JUNOS and EVO) Release 20.4R2
Tested v4 edge over v6 core in a virtual setup using vMX platforrm
and 20.4R2 and LDPv6 as underlay, but there were some data plane
forwarding issues. Tested same setup on latest release 21.4 and it
worked. Investigating what the minimum version is for this setup to
work.
Arista:
Nokia: Edge and Core-7750 Service Router, Release R21
Huawei: Edge and Core-VRPv8, Release VRP-V800R020C10
5.3. Test-3 IPv6-Only PE-CE Global Table over IPv6-Only Core 5.3. Test-3 IPv6-Only PE-CE Global Table over IPv6-Only Core
________ ________
IPv6-Only _____ / \ IPv6-Only IPv6-Only _____ / \ IPv6-Only
PE / CE / \__/ \___ PE / CE PE / CE / \__/ \___ PE / CE
+----+ +----+ / \ +------+ +-----+ +----+ +----+ / \ +------+ +-----+
| | | | | |_ | | | | | | | | | |_ | | | |
| | | | | \ | | | | | | | | | \ | | | |
| CE |--| PE |--\ IPv6-Only Core |----| PE |---| CE | | CE |--| PE |--\ IPv6-Only Core |----| PE |---| CE |
| | | | \0=========Underlay =======0| | | | | | | | | \0=========Underlay =======0| | | | |
+----+ +----+ \ __/ +------+ +-----+ +----+ +----+ \ __/ +------+ +-----+
IPv6 BGP peer \ MPLS / SR domain / IPv6 BGP peer IPv6 BGP peer \ MPLS / SR domain / IPv6 BGP peer
IPv4 forwarding \__ __ / IPv4 forwarding IPv4 forwarding \__ __ / IPv4 forwarding
IPv6 forwarding \_______/ \_____/ IPv6 forwarding IPv6 forwarding \_______/ \_____/ IPv6 forwarding
Figure 9: Test-3 E2E IPv6-Only PE-CE Global Table 4to6 Softwire Figure 9: Test-3 E2E IPv6-Only PE-CE Global Table 4to6 Softwire
Cisco, Juniper, Arista, Nokia, Huawei Test case Results documented Cisco, Juniper, Arista, Nokia, Huawei code and platform and test
here. results.
Cisco: Edge Router- XR ASR 9910 IOS XR 7.4.1, Core Router- NCS 6000
7.2.2, CRS-X 6.7.4
Juniper: Edge Router- MX platform MX480, MX960, Core Router- PTX
Platform PTX5000, PTC10K8 (JUNOS and EVO) Release 20.4R2
Tested v4 edge over v6 core in a virtual setup using vMX platforrm
and 20.4R2 and LDPv6 as underlay, but there were some data plane
forwarding issues. Tested same setup on latest release 21.4 and it
worked. Investigating what the minimum version is for this setup to
work.
Arista:
Nokia: Edge and Core-7750 Service Router, Release R21
Huawei: Edge and Core-VRPv8, Release VRP-V800R020C10
5.4. Test-4 IPv6-Only PE-CE VPN over IPv6-Only Core 5.4. Test-4 IPv6-Only PE-CE VPN over IPv6-Only Core
________ ________
IPv6-Only _____ / \ IPv6-Only IPv6-Only _____ / \ IPv6-Only
PE / CE / \__/ \___ PE / CE PE / CE / \__/ \___ PE / CE
+----+ +----+ / \ +------+ +-----+ +----+ +----+ / \ +------+ +-----+
| | | | | 0====VPN Overlay Tunnel ==0| | | | | | | | | | 0====VPN Overlay Tunnel ==0| | | | |
| | | | | \ | | | | | | | | | \ | | | |
| CE |--| PE |--\ IPv6-Only Core |----| PE |---| CE | | CE |--| PE |--\ IPv6-Only Core |----| PE |---| CE |
| | | | \0=========Underlay =======0| | | | | | | | | \0=========Underlay =======0| | | | |
+----+ +----+ \ __/ +------+ +-----+ +----+ +----+ \ __/ +------+ +-----+
IPv6 BGP peer \ MPLS / SR domain / IPv6 BGP peer IPv6 BGP peer \ MPLS / SR domain / IPv6 BGP peer
IPv4 forwarding \__ __ / IPv4 forwarding IPv4 forwarding \__ __ / IPv4 forwarding
IPv6 forwarding \_______/ \_____/ IPv6 forwarding IPv6 forwarding \_______/ \_____/ IPv6 forwarding
Figure 10: Test-4 E2E IPv6-Only PE-CE VPN 4to6 Softwire Figure 10: Test-4 E2E IPv6-Only PE-CE VPN 4to6 Softwire
Cisco, Juniper, Arista, Nokia, Huawei Test case Results documented Cisco, Juniper, Arista, Nokia, Huawei code and platform and test
here. results.
Cisco: Edge Router- XR ASR 9910 IOS XR 7.4.1, Core Router- NCS 6000
7.2.2, CRS-X 6.7.4
Juniper: Edge Router- MX platform MX480, MX960, Core Router- PTX
Platform PTX5000, PTC10K8 (JUNOS and EVO) Release 20.4R2
Tested v4 edge over v6 core in a virtual setup using vMX platforrm
and 20.4R2 and LDPv6 as underlay, but there were some data plane
forwarding issues. Tested same setup on latest release 21.4 and it
worked. Investigating what the minimum version is for this setup to
work.
Arista:
Nokia: Edge and Core-7750 Service Router, Release R21
Huawei: Edge and Core-VRPv8, Release VRP-V800R020C10
5.5. IPv6-Only PE-CE Operational Considerations Testing 5.5. IPv6-Only PE-CE Operational Considerations Testing
Ping CE to PE when destination prefix is withdrawn Ping CE to PE when destination prefix is withdrawn
Traceroute CE to PE and test all ICMPv4 and ICMPv6 type codes Traceroute CE to PE and test all ICMPv4 and ICMPv6 type codes
+-------+ +-------+ +-------+ +-------+
| | IPv6 Only | | | | IPv6 Only | |
| CE |----------------| PE | | CE |----------------| PE |
| | IPv6 BGP Peer | | | | IPv6 BGP Peer | |
+-------+ +-------+ +-------+ +-------+
IPv4 forwarding IPv4 forwarding IPv4 forwarding IPv4 forwarding
IPv6 forwarding IPv6 forwarding IPv6 forwarding IPv6 forwarding
Figure 11: Ping and Trace Test Case Figure 11: Ping and Trace Test Case
Cisco, Juniper, Arista, Nokia, Huawei Test case Results documented Cisco, Juniper, Arista, Nokia, Huawei code and platform and test
here. results.
Cisco: Edge Router- XR ASR 9910 IOS XR 7.4.1, Core Router- NCS 6000
7.2.2, CRS-X 6.7.4
Juniper: Edge Router- MX platform MX480, MX960, Core Router- PTX
Platform PTX5000, PTC10K8 (JUNOS and EVO) Release 20.4R2
Tested v4 edge over v6 core in a virtual setup using vMX platforrm
and 20.4R2 and LDPv6 as underlay, but there were some data plane
forwarding issues. Tested same setup on latest release 21.4 and it
worked. Investigating what the minimum version is for this setup to
work.
Arista:
Nokia: Edge and Core-7750 Service Router, Release R21
Huawei: Edge and Core-VRPv8, Release VRP-V800R020C10
6. Operational Considerations 6. Operational Considerations
With a single IPv6 Peer carrying both IPv4 and IPv6 NLRI there are With a single IPv6 Peer carrying both IPv4 and IPv6 NLRI there are
some operational considerations in terms of what changes and what some operational considerations in terms of what changes and what
does not change. does not change.
What does not change with a single IPv6 transport peer carrying IPv4 What does not change with a single IPv6 transport peer carrying IPv4
NLRI and IPv6 NLRI below: NLRI and IPv6 NLRI below:
skipping to change at page 21, line 4 skipping to change at page 22, line 41
Information (NLRI) with an IPv6 Next Hop", RFC 8950, Information (NLRI) with an IPv6 Next Hop", RFC 8950,
DOI 10.17487/RFC8950, November 2020, DOI 10.17487/RFC8950, November 2020,
<https://www.rfc-editor.org/info/rfc8950>. <https://www.rfc-editor.org/info/rfc8950>.
Authors' Addresses Authors' Addresses
Gyan Mishra Gyan Mishra
Verizon Inc. Verizon Inc.
Email: gyan.s.mishra@verizon.com Email: gyan.s.mishra@verizon.com
Mankamana Mishra Mankamana Mishra
Cisco Systems Cisco Systems
821 Alder Drive, 821 Alder Drive,
MILPITAS CALIFORNIA 95035 MILPITAS CALIFORNIA 95035
Email: mankamis@cisco.com Email: mankamis@cisco.com
Jeff Tantsura Jeff Tantsura
Juniper Networks, Inc. Microsoft, Inc.
Email: jefftant.ietf@gmail.com Email: jefftant.ietf@gmail.com
Sudha Madhavi Sudha Madhavi
Juniper Networks, Inc. Juniper Networks, Inc.
Email: smadhavi@juniper.net Email: smadhavi@juniper.net
Qing Yang Qing Yang
Arista Networks Arista Networks
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