ipv6: RTM_GETROUTE inconsistent interpretation of RTA_IIF

[Shmulik Ladkani <shmulik.ladkani@gmail.com>]

(Bump)

Any reason not to submit a patch that fixes the below issue?

Regards,
Shmulik

On Thu, 29 Mar 2012 15:03:11 +0200 Shmulik Ladkani <shmulik.ladkani@gmail.com> wrote:
> Hi,
> 
> In IPv4, if the RTA_IIF attribute is specified in an RTM_GETROUTE
> message, then a route is searched as if a packet was received on the
> specified iif interface - i.e. 'inet_rtm_getroute()' calls
> 'ip_route_input()'.
> 
> However in IPv6, RTA_IIF is not interpreted in the same way:
> 'inet6_rtm_getroute()' always calls 'ip6_route_output()', regardless the
> RTA_IIF attribute.
> 
> As a result, in IPv6 there's no way to use RTM_GETROUTE in order to look
> for a route as if a packet was received on a specific interface.
> 
> I'd like to modify 'inet6_rtm_getroute()' so that RTA_IIF is interpreted
> in the same way as in IPv4's 'inet_rtm_getroute()'.
> 
> Before I come up with a patch, I'd like to know whether current
> interpretation of RTA_IIF in 'inet6_rtm_getroute()' is deliberate.