This fixes crash in interface_start caused by freeing interface in
interface_free without stopping a timeout.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This update includes numerous small fixes for:
1) Interfaces setup
2) Packets parsing
3) Sending replies
Without this there were multiple problems with exchanging information
between (u)mdns and other implementations (including (u)mdns as well).
This also follows project rename to umdns which was required to avoid
confusion with Apple's mdnsd from mDNSResponder project.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>