I uncommented the hostname in /etc/avahi/avahi-daemon.conf, section [server] and I give it a random name as you asked (different of the real hostname).
Then I restarted the avahi-daemon with sudo service avahi-daemon restart (I use Lucid and I tried with service avahi-daemon-restart, but it complained) The problem persists afterwards (there are two IPS, #IP1 and #IP2, neither the two is the one I have in my computer): Aug 25 09:54:09 sis avahi-daemon[2731]: Received response from host #IP with invalid source port 40420 on interface 'eth0.0' Aug 25 09:54:18 sis wpa_supplicant[1022]: WPS-AP-AVAILABLE Aug 25 09:54:26 sis avahi-daemon[2731]: Received response from host #IP with invalid source port 9918 on interface 'eth0.0' Aug 25 09:54:39 sis avahi-daemon[2731]: Invalid legacy unicast query packet. Aug 25 09:54:39 sis avahi-daemon[2731]: Received response from host #IP with invalid source port 24240 on interface 'eth0.0' Aug 25 09:54:39 sis avahi-daemon[2731]: Invalid legacy unicast query packet. Aug 25 09:54:40 sis avahi-daemon[2731]: Invalid legacy unicast query packet. Aug 25 09:54:40 sis avahi-daemon[2731]: Received response from host #IP with invalid source port 24240 on interface 'eth0.0' Aug 25 09:54:40 sis avahi-daemon[2731]: Invalid legacy unicast query packet. Aug 25 09:54:41 sis avahi-daemon[2731]: Invalid legacy unicast query packet. Aug 25 09:54:41 sis avahi-daemon[2731]: Received response from host #IP with invalid source port 24240 on interface 'eth0.0' Aug 25 09:55:13 sis avahi-daemon[2731]: last message repeated 7 times Aug 25 09:55:13 sis avahi-daemon[2731]: Received response from host #IP with invalid source port 40420 on interface 'eth0.0' Aug 25 09:55:18 sis wpa_supplicant[1022]: WPS-AP-AVAILABLE Aug 25 09:55:23 sis avahi-daemon[2731]: Invalid legacy unicast query packet. Aug 25 09:55:27 sis avahi-daemon[2731]: last message repeated 5 times Aug 25 09:55:27 sis avahi-daemon[2731]: Received response from host #IP with invalid source port 9918 on interface 'eth0.0' Aug 25 09:55:28 sis avahi-daemon[2731]: Received response from host #IP2 with invalid source port 46459 on interface 'eth0.0' Aug 25 09:55:28 sis avahi-daemon[2731]: Received response from host #IP2 with invalid source port 45543 on interface 'eth0.0' and continues all the time... -- avahi-daemon reports "Received response with invalid source port # on interface 'eth0.0'" all the time https://bugs.launchpad.net/bugs/447442 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs