netdev - [PATCH net-next 0/5] ipv6: Allow for nexthop device mismatch with "onlink"

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Message-ID: <20260111120813.159799-1-idosch@nvidia.com>
Date: Sun, 11 Jan 2026 14:08:08 +0200
From: Ido Schimmel <idosch@...dia.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	dsahern@...nel.org,
	horms@...nel.org,
	petrm@...dia.com,
	Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 0/5] ipv6: Allow for nexthop device mismatch with "onlink"

This patchset aligns IPv6 with IPv4 with respect to the "onlink" keyword
and allows IPv6 routes to be configured with a gateway address that is
resolved out of a different interface than the one specified.

Patches #1-#3 are small preparations in the existing "onlink" selftest.

Patch #4 is the actual change. See the commit message for detailed
description and motivation.

Patch #5 adds test cases for both address families, to make sure that
this use case does not regress.

Ido Schimmel (5):
  selftests: fib-onlink: Remove "wrong nexthop device" IPv4 tests
  selftests: fib-onlink: Remove "wrong nexthop device" IPv6 tests
  selftests: fib-onlink: Add a test case for IPv4 multicast gateway
  ipv6: Allow for nexthop device mismatch with "onlink"
  selftests: fib-onlink: Add test cases for nexthop device mismatch

 net/ipv6/route.c                              |  7 ++---
 .../testing/selftests/net/fib-onlink-tests.sh | 28 +++++++++----------
 2 files changed, 16 insertions(+), 19 deletions(-)

-- 
2.52.0