What is this avahi user and group for? It seems to be part of the open-exchange install but is not documented anywhere.
It starts up as a daemon very early in the startup process.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Found user 'avahi' (UID 109) and group 'avahi' (GID 118).
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Successfully dropped root privileges.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: avahi-daemon 0.6.22 starting up.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Successfully called chroot().
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Successfully dropped remaining capabilities.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: No service file found in /etc/avahi/services.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Joining mDNS multicast group on interface eth0.IPv4 with address 172.20.0.16.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: New relevant interface eth0.IPv4 for mDNS.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Network interface enumeration completed.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Registering new address record for fe80::250:8bff:fed9:7e54 on eth0.*.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Registering new address record for 172.20.0.16 on eth0.IPv4.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Registering HINFO record with values 'I686'/'LINUX'.
Dec 7 15:45:14 LinuxII avahi-daemon[4143]: Server startup complete. Host name is LinuxII.local. Local service cookie is 2784476425.
It starts up as a daemon very early in the startup process.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Found user 'avahi' (UID 109) and group 'avahi' (GID 118).
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Successfully dropped root privileges.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: avahi-daemon 0.6.22 starting up.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Successfully called chroot().
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Successfully dropped remaining capabilities.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: No service file found in /etc/avahi/services.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Joining mDNS multicast group on interface eth0.IPv4 with address 172.20.0.16.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: New relevant interface eth0.IPv4 for mDNS.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Network interface enumeration completed.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Registering new address record for fe80::250:8bff:fed9:7e54 on eth0.*.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Registering new address record for 172.20.0.16 on eth0.IPv4.
Dec 7 15:45:13 LinuxII avahi-daemon[4143]: Registering HINFO record with values 'I686'/'LINUX'.
Dec 7 15:45:14 LinuxII avahi-daemon[4143]: Server startup complete. Host name is LinuxII.local. Local service cookie is 2784476425.
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