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Date:   Fri, 18 Sep 2020 14:17:58 -0400
From:   Mathieu Desnoyers <>
To:     David Ahern <>,
        "David S . Miller" <>,
        Mathieu Desnoyers <>
Subject: [RFC PATCH v2 0/3] l3mdev icmp error route lookup fixes


Here is an updated series of fixes for ipv4 and ipv6 which which ensure
the route lookup is performed on the right routing table in VRF
configurations when sending TTL expired icmp errors (useful for

It includes tests for both ipv4 and ipv6.

These fixes address specifically address the code paths involved in
sending TTL expired icmp errors. As detailed in the individual commit
messages, those fixes do not address similar issues related to network
namespaces and unreachable / fragmentation needed messages, which appear
to use different code paths.



Mathieu Desnoyers (2):
  ipv4/icmp: l3mdev: Perform icmp error route lookup on source device
    routing table (v2)
  ipv6/icmp: l3mdev: Perform icmp error route lookup on source device
    routing table (v2)

Michael Jeanson (1):
  selftests: Add VRF icmp error route lookup test

 net/ipv4/icmp.c                               |  23 +-
 net/ipv6/icmp.c                               |   7 +-
 net/ipv6/ip6_output.c                         |   2 -
 tools/testing/selftests/net/Makefile          |   1 +
 .../selftests/net/     | 475 ++++++++++++++++++
 5 files changed, 502 insertions(+), 6 deletions(-)
 create mode 100755 tools/testing/selftests/net/


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