[avahi] multiple ethernet ports

[Zachary Loafman]

> The long answer is to use the specific interface information provided
> by Avahi and bind your sockets to a specific interface, in IPv4 this
> is optional, to use IPv6 link-local addreses, this is *required*

Can you clarify this? Can IPv6 handle the multi-NIC link local routing
correctly? How does it handle it, some sort of ARP on all NICs to find
out which interface to send out over?

...Zach