Add per provider option for interface to bind to

[nihilus]

It would be nice to tell which interface that a specific provider should be queried/replied via.

[troglobit]

Yup. For now you'll have to run multiple instances instead. I recommend using --ident=provider which will cause inadyn to look for /etc/provider.conf and create /run/provider.pid and log with the same identity to syslog.

[nihilus]

Actually I piggybacked on the proxy-functionality and used SO_BINDTODEVICE