From: Florian Westphal
Date: Fri, 7 Aug 2015 10:54:28 +0200
> 48ed7b26faa7 ("ipv6: reject locally assigned nexthop addresses") is too
> strict; it rejects following corner-case:
>
> ip -6 route add default via fe80::1:2:3 dev eth1
>
> [ where fe80::1:2:3 is assigned to a local interface, but n
48ed7b26faa7 ("ipv6: reject locally assigned nexthop addresses") is too
strict; it rejects following corner-case:
ip -6 route add default via fe80::1:2:3 dev eth1
[ where fe80::1:2:3 is assigned to a local interface, but not eth1 ]
Fix this by restricting search to given device if nh is linkloca
