After the last NetworkManager update, the use of aliases for the server no longer works
https://askubuntu.com/questions/1566619/after-the-last-networkmanager-update-the-use-of-aliases-for-the-server-no-longeThis is a weird problem. I have two Ubuntu servers. One, running Ubuntu 25.10, is fine, no issues, the other one runs Ubuntu 24.04.4 and is the host for my Apache webserver and postfix email server.
After the last NetworkManager update last week, the use of network aliases no longer work for Ubuntu 24.04.4 server.
For instance if I want to connect to my webserver, www.abcvde.net that resides on the 24.04.4 server, I get a "Destination Host Unreachable." Nor can I use the IP address (192.168.0.22), it times out. However, if I use the localhost alias or its IP, it works. Using the server's own IP, 192.168.0.11 fails as unreachable.
Pinging the alias name, BBB fails, as does pinging its IP. However, I can ping other PCs/servers in my home network using either IP address or the alias.
What is more puzzling, since this occurred at the same time, I'm no longer receiving emails. I believe there's a connection but don't see how. I only have one server set up as a email server (postfix) so I can't just redirect the incoming email packets to another server. Outbound emails work, no issue. Email app is Thunderbird.
I also checked to see that the firewall is off. I'm behind two other firewalls and a NAT. A firewall isn't needed. The router is TP-Link.
Thoughts? Ideas?








