[PATCH] IPv4 over IPv6 nexthop support on FreeBSD

[Luiz Amaral]

On 17/04/2023 17.12, Marek Zarychta wrote:
> Hello Luiz,
>
> have you tried netlink flavour of BIRD ? It requires FreeBSD 13.2, but 
> should work out of the box in such a setup, I have not tested though. 
Hello Marek,

I tried the netlink version and while the export of routes to the kernel 
worked fine, the import into BIRD was failing.

# netstat -nr
Routing tables

Internet:
Destination        Gateway            Flags     Netif Expire
10.10.10.0/24      2a12:6e40::2       UGS      vtnet0

bird> show route 10.10.10.0/24 all
Table master4:
10.10.10.0/24        unicast [k_default_4 2023-04-20 16:24:28] * (10)
     dev vtnet0
     Type: inherit univ
     Kernel.source: 4
     Kernel.metric: 0

I checked the code and found that the RTA_VIA related code was only 
included on kernels with MPLS support. I will provide a patch to fix it 
shortly.

Luiz