Babel over wireguard

Ryan Whelan rcwhelan at
Wed Dec 6 13:40:03 CET 2017

Are there any routing protocol implementations that do not depend on
multicast?  In my setup, 2 hosts will be able to route to one another over
2 different wg interfaces and I just need something to select whichever
interface has the least latency.  Anything like that exist? :D

On Wed, Dec 6, 2017 at 7:33 AM, Toke Høiland-Jørgensen <toke at> wrote:

> On 6 December 2017 13:07:56 CET, Ryan Whelan <rcwhelan at> wrote:
> >I'm looking to run babel over wireguard links and running into issues.
> >I
> >seem to be unable to get Bird or the reference implementation of Babel
> >to
> >bind to any wireguard interfaces.  Is this a known issue? or has anyone
> >found a config that works?
> You need to manually add link-local IPs (fe80:: something) to the
> wireguard interface. Also, since wireguard doesn't support multicast it is
> only likely to work on point-to-point links with AllowedIPs set to ::/0 (or
> something else that includes the Babel multicast address).
> -Toke
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