no IPv6 interfaces found

[Marten Lehmann]

> My laptop! It runs a name server and changes its interface address(es)
> depending on what network it's connected to.

It's your decision but in my eyes that's stupid. Why can't you just use 
DHCP like all others do and use the nameservers of your provider? If 
you're changing networks, you're changing IP-addresses also and you 
probably get the new IP-address through DHCP. You hopefully don't wait 
until BIND knows about the new interfaces after running its periodically 
check instead of just restarting it. I don't see a problem for 
restarting in your situation. Either you're running a nameserver where 
other people and server rely on (no matter if caching nameserver or 
authoritative zones), then you don't change IP-addresses all the time, 
or you're running BIND as a resolver for your own, then 1 or 2 seconds 
until BIND restarts doesn't matter.