zebra: be consistent about v6 nexthops for v4 routes #16103
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when does zebra receive a NEXTHOP_TYPE_IPV6 for usage in 5549? |
when ... bgp has regular v6 nexthops to use? I don't think there's any requirement that the v6 addresses be link-locals, is there? we saw this problem with a sonic topology, so using sonic's frr at 8.5.x. |
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I was mainly asking to gauge whether or not I wanted to ask for a topotest. I don't mind treating both the same, I am trying to figure out what kind of code coverage we want. |
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CI:rerun |
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would it be possible to add a small topotest to show that this is working the way we want? |
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new rfc 8950 |
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waiting on topo test |
Treat TYPE_IPV6 and TYPE_IPV6_IFINDEX nexthops the same way when processing v4 (RFC 5549) routes. Signed-off-by: Mark Stapp <mjs@cisco.com>
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rebased to current master... |
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Treat TYPE_IPV6 and TYPE_IPV6_IFINDEX nexthops the same way when processing v4 (RFC 5549) routes. TYPE_IPV6 nexthops were being treated as if the prefix was v6: that causes the zebra 'ip protocol' routemap to fail to match and prevents use of the routemap to set a v4 source address when installing the route. That in turn prevents locally-sourced traffic to the v4 prefix from working correctly.