A workaround that has worked every time so far: restart the squid-deb-proxy-avahi process on the server machine.
sudo service squid-deb-proxy-avahi restart
The problem seems to occur when the server is on for a couple of days or a week. The first few days everything works without problems.
A workaround that has worked every time so far: restart the squid-deb- proxy-avahi process on the server machine. proxy-avahi restart
sudo service squid-deb-
The problem seems to occur when the server is on for a couple of days or a week. The first few days everything works without problems.