netlink support question for RFC 5549

[Ondrej Zajicek]

On Tue, Apr 24, 2018 at 10:38:03AM +0000, Arvin Gan wrote:
> Hi All,
>
>      I notice that BGP can support RFC 5549  using configuration
> "ext_next_hop", bird can sync with kernel table using netlink assuming
> kernel support route with IPV4 DIP and IPV6 next hop.
> ...
> that mean if bird received IPV4 NLRI  with IPV6 next
> hop, the gateway is parsed with IPV4 address since address family is IPV4
> unicast on this case, does  my understand correct ? If yes, this parse
> process have a bug ?

Hi

BIRD does not support mixed next hops on netlink. It would be simple to
implement that, but i think that Linux kernel does not (yet) support such
routes anyway. At least i failed to setup such routes using 'ip' tool.

Could you (or anybody) get such routes to work in Linux?

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
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"To err is human -- to blame it on a computer is even more so."