Description: net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=1809833
Notes:
 carnil> Introduced with 5f81bd2e5d80 ("ipv6: export a stub for IPv6
 carnil> symbols used by vxlan") in 3.12-rc1.
Bugs:
upstream: released (5.5-rc1) [6c8991f41546c3c472503dff1ea9daaddf9331c2]
4.19-upstream-stable: needed
4.9-upstream-stable: needed
3.16-upstream-stable: needed
sid: released (5.4.6-1)
4.19-buster-security: needed
4.9-stretch-security: needed
3.16-jessie-security: needed