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bgpd: Validate both nexthop information (NEXTHOP and NLRI) (backport #17435) #17440

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bgpd: Validate both nexthop information (NEXTHOP and NLRI) (backport #17435) #17440

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@mergify mergify bot commented Nov 17, 2024

Closes #17308

This is an automatic backport of pull request #17435 done by Mergify.

@ton31337 @mergify
tests: Check if IPv6 prefix has a valid nexthop if multiple NLRIs exist
0c0d27e 
Signed-off-by: Donatas Abraitis <[email protected]>
(cherry picked from commit 229466e)
@ton31337 @mergify
bgpd: Validate both nexthop information (NEXTHOP and NLRI)
523a2a4 
If we receive an IPv6 prefix e.g.: 2001:db8:100::/64 with nextop: 0.0.0.0, and
mp_nexthop: fc00::2, we should not treat this with an invalid nexthop because
of 0.0.0.0. We MUST check for MP_REACH attribute also and decide later if we
have at least one a valid nexthop.

Signed-off-by: Donatas Abraitis <[email protected]>
(cherry picked from commit a0d2734)

# Conflicts:
#	bgpd/bgp_route.c
@mergify mergify bot added the conflicts label Nov 17, 2024
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mergify bot commented Nov 17, 2024

Cherry-pick of a0d2734 has failed:

On branch mergify/bp/stable/10.1/pr-17435
Your branch is ahead of 'origin/stable/10.1' by 1 commit.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit a0d2734e87.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   bgpd/bgp_route.c

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

@frrbot frrbot bot added bgp tests Topotests, make check, etc labels Nov 17, 2024
@mergify mergify bot mentioned this pull request Nov 17, 2024
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