I wasn't able to add a 'Patches' ticket over at
https://sourceforge.net/p/jmdns/patches/, so I'm sending my
contribution in here. If there's a better place, please don't hesitate
to point me in the right direction...
So, the rationale: Without this patch, jmDNS service publishing fails
on some Android devices with a ENODEV error in _socket.joinGroup() when
in softAP mode. Specififying the network interface fixes this.
Attached patch against current SVN trunk.