handling of the onlink next hop

Maria Matejka maria.matejka at nic.cz
Tue May 27 12:44:18 CEST 2025


Hello Radu,

> > `/etc/bird.conf:7:5 syntax error, unexpected ONLINK`
> >
> > By reading the migration guide, i see that it was a deliberate choice to stop supporting this attribute: "The|onlink|route attribute has been temporarily disabled until we find out how to implement it properly."
> >
> > Is there a plan to bring back support for it in the nearby future?
>
> yes, there are plans to fix it, unfortunately we didn't have time yet
> to do it. The actual problem is semantics of the nexthop attribute
> wrt. the configured VRFs, but thinking about that again, I'm almost
> tempted to say that all the original reasons are gone. So we'll check
> and let you know very soon.

Well, could you please try the current thread-next branch?

<https://gitlab.nic.cz/labs/bird/-/tree/thread-next>

Unfortunately, you'll have to build it yourself for now.

We are also in the process of implementing Rocky Linux package
autobuild, so I would expect that in a short time, you may get even
a package to test. (Not now though.)

Have a nice day!  
Maria

-- 
Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.
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