[ofa-general] Question about addr_resolve_remote

[Steve Wise]

Roland Dreier wrote:
>  > Do you think it would be a problem if I changed
>  > neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, rt->idev->dev);
>  > to
>  > neigh = neigh_lookup(&arp_tbl, &rt->rt_dst, rt->idev->dev);
>
> Yes I think it would be a problem, because what if you are trying to
> connect to a destination that is behind a router?  (and keep in mind, in
> your example, it is perfectly correct to try and connect to 4.5.7.8 if
> it happens to be reachable via a router from your RNIC of 192.168.0.1)
>
>  - R.
>   

In other words, the neigh entry and its state pertain to the next hop, 
not the final destination (unless the next hop -is- the final 
destination).  And if you really are trying to get traffic to 4.5.7.8 
via your rnic, you need to make sure the linux routing table is setup to 
provide that route.   Based on your example, your local routing table is 
setup such that 4.5.7.8 is reachable only via your NIC interface (maybe 
via the default route?).

Steve.