No IP 4 address setup no loopback interface

[Bruno Wolff III]

I am still investigating this, but I have an f22 laptop that is only 
getting an IP6 address set up on the loopback interface. I noticed this 
because I run a local resolver on 127.0.0.1 and connections to it stopped 
working over night (after a reboot). The was a NetworkManager update before 
the reboot where things stopped working, so that seems to be the mostly 
change that triggered the problem. I'll be able to reboot another f22 
machine tomorrow and also should have time to try downgrading 
NetworkManager to confirm whether or not that update is really causing the 
problem. (And file a bug and give negative karma if appropriate.)