ap-mdns: add configuration templates for printer services and avahi daemon
ap-mdns: write avahi configuration dynamically
ap-mdns: fix avahi config writing
ap-mdns: fix interface logging
ap-mdns: filter out all mDNS traffic in tap interfaces
ap-mdns: handle handle all cached event correctly
ap-mdns: fix iptables interface flag according to to the chain
ap-mdns: fix typo
ap-mdns: restart avahi each time a new network is configured
ap-mdns: do not try to add interfaces dynamically

Avahi does not support it without full hard restart.