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Found one more issue (using netlab, thank you @ipspace) when using route reflectors and IPv6 LL capability.

ton31337 added 4 commits July 27, 2025 11:18
Fixes: 95d9a33 ("bgpd: Do not send link-local address which is empty (::)")

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
Fixes: 0050f82 ("bgpd: Send LL only if LL Next Hop capability is negotiated")

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
@frrbot frrbot bot added bgp bugfix tests Topotests, make check, etc labels Jul 27, 2025
@ton31337 ton31337 marked this pull request as ready for review July 27, 2025 13:20
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@riw777 riw777 left a comment

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looks good

@riw777 riw777 merged commit ba17bd7 into FRRouting:master Jul 29, 2025
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@ton31337 ton31337 deleted the fix/bgp_ipv6_next_hop_self_ll_capability_route_reflector branch July 29, 2025 17:20
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@Mergifyio backport stable/10.4

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mergify bot commented Jul 29, 2025

backport stable/10.4

✅ Backports have been created

ton31337 added a commit that referenced this pull request Jul 30, 2025
bgpd: LL next-hop capabilty fixes (round 2) (backport #19277)
Jafaral added a commit that referenced this pull request Aug 2, 2025
Bug Fixes:

* bgpd: initialize local variable (backport #19233)
* ospfd: Use after free cleanup of lsa (backport #19224)
* vtysh: copy config from file should actually apply (backport #19242)
* Revert PR #18358: BGP evpn testing and bug fixes related to non default EVPN backbone  (backport #19241)
* topotests: improve embedded RP test reliability (backport #19240)
* lib, zebra: mark singleton nexthops inactive/active on link state changes for wecmp (backport #18947)
* bgpd: LL next-hop capabilty fixes (backport #19261)
* eigrp: validate hello packets and tlvs better (backport #19251)
* bgpd: Fix compilation error in bgpd module: Update TP_ARGS for bgp (backport #19266)
* bgpd: Ensure addpath does not withdraw selected route in some situations (backport #19210)
* bgpd: [GR] fixed selectionDeferralTimer to display select_defer_time val by #19282
* bgpd: LL next-hop capabilty fixes (round 2) (backport #19277)
* lib: compute link-state zapi message size (backport #19290)
* zebra: Fix buffer overflows found by fuzzing. (backport #19303)

Signed-off-by: Jafar Al-Gharaibeh <jafar@atcorp.com>
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2 participants