Ok, then it's multiple ISP:s, which is not surprising of course.
The simplest and best workaround for now is to edit /etc/default/avahi-daemon, change AVAHI_DAEMON_DETECT_LOCAL to 0 and reboot. (alternative is to change to eg. OpenDNS from ISP:s DNS servers, and/or advocating the issue to ISP:s service desk).
Ok, then it's multiple ISP:s, which is not surprising of course.
The simplest and best workaround for now is to edit /etc/default/ avahi-daemon, change AVAHI_DAEMON_ DETECT_ LOCAL to 0 and reboot. (alternative is to change to eg. OpenDNS from ISP:s DNS servers, and/or advocating the issue to ISP:s service desk).