Editing /etc/default/avahi-daemon fixed it for me.
AVAHI_DAEMON_DETECT_LOCAL=0 makes it discover all 8.10 machines in my lan (and others machines are now able to see the upgraded one).
Possible cause for problem might be D-link nat router which has built in dns proxy. I don't realy know but that is my best guess.
Editing /etc/default/ avahi-daemon fixed it for me.
AVAHI_DAEMON_ DETECT_ LOCAL=0 makes it discover all 8.10 machines in my lan (and others machines are now able to see the upgraded one).
Possible cause for problem might be D-link nat router which has built in dns proxy. I don't realy know but that is my best guess.