Cannot restart avahi-daemon

```
FreeBSD% sudo service avahi-daemon restart
Stopping avahi-daemon.
Starting avahi-daemon.

FreeBSD% sudo service avahi-daemon status
avahi_daemon is not running.

FreeBSD% sudo avahi-daemon
Found user 'avahi' (UID 558) and group 'avahi' (GID 558).
Successfully dropped root privileges.
avahi-daemon 0.7 starting up.
Loading service file /usr/local/etc/avahi/services/sftp-ssh.service.
Loading service file /usr/local/etc/avahi/services/ssh.service.
*** WARNING: Detected another IPv4 mDNS stack running on this host. This makes mDNS unreliable and is thus not recommended. ***
bind() failed: Address already in use
*** WARNING: Detected another IPv6 mDNS stack running on this host. This makes mDNS unreliable and is thus not recommended. ***
bind() failed: Address already in use
Failed to create server: No suit
```