Re: [PATCH net v2] ipv6: socket SO_BINDTODEVICE lookup routing fail without IPv6 rule.

On Fri, 3 Jan 2025 13:43:49 +0800 Shiming Cheng wrote:

When using socket IPv6 with SO_BINDTODEVICE, if IPv6 rule is not
matched, it will return ENETUNREACH. In fact, IPv4 does not behave
this way. IPv4 prioritizes looking up IP rules for routing and
forwarding, if not matched it will use socket-bound out interface
to send packets. The modification here is to make IPv6 behave the
same as IPv4. If IP rule is not found, it will also use socket-bound
out interface to send packts.

CI shows failures in tools/testing/selftests/net/fcnal-test.sh
and tools/testing/selftests/net/fib_nexthops.sh with this patch
applied. Could be a flake but please double check before sending v3