How to add IPv6 support?

David Rohleder davro at
Fri Oct 1 14:24:01 CEST 2010

Ondrej Zajicek píše v Pá 01. 10. 2010 v 14:27 +0200:
> On Thu, Sep 30, 2010 at 07:16:34PM +0200, David Rohleder wrote:
> > > It seems silly for the first moment, but it has several advantages.
> > > IPv4 and IPv6 usually needs slightly different configs, different filters
> > > (esp. addresses in filters) and having separate IPv4 sessions and IPv6
> > > sessions means that you forward IPv4/6 routes only if IPv4/6 is really
> > > working on the routers.
> > > 
> > 
> > And what about BGP+ announcing IPv6 prefixes over IPv4 connection?
> I am not sure what kind of answer you would expect. BIRD (AFAIK)
> supports announcing IPv6 over IPv4 connection, but it is not a suggested
> configuration. Because if bird6 is listening also on IPv4 socket, you
> cannot start bird4 on the same address/iface. And also it can forward
> IPv6 routes even if IPv6 is not really working on the router.

OK, I have my upstream provider providing my IPv4 and IPv6 connectivity.
Your idea is to run 2 instances of BIRD and 2 BGP sessions to my peers
just to announce my IPv4 and IPv6 routes, isn't it?

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