[Networkmanager] IP address not restored upon carrier loss

[Chris Adams]

Once upon a time, Vincent <techburgher at gmail.com> said:
> We have a customer running Red Hat 8.5.0-10,
> kernel 4.18.0-372.26.1.el8_6.x86_64, NetworkManager version 1.36.0-7.el8_6.
> When they disconnect their network cable, the static IP address, on the
> corresponding interface, is lost. When the cable is reconnected, the IP
> address is never restored, unless nmcli con down is issued. What would
> account for this behavior? We would expect a statically configured IP
> address to persist between carrier state changes. What seems a bit odd, is
> that the logs indicate the state change, triggered from disconnection, as
> reason "user-requested" instead of "carrier-changed".

I'm not sure what the connection isn't automatically restored (unless
"autoconnect" is set to false/0), but you can avoid the behavior of a
static IP being removed in response to carrier changes by installing the
NetworkManager-config-server package.

-- 
Chris Adams <linux at cmadams.net>