OpenSuse Tumbleweed is a factory rolling release. It has the latest updates which means it has the greatest functionality, … unless a bug appears which disrupts stability till the next update (which usually happens within 24 hours).
So, on a couple of occasions an update has broken the network connection – it looks connected, but doesn’t download to any sites, including the software update repositories. Previously I reinstalled to get it working (what a pain!),
Today I discovered that even with the broken network, Tor browser worked. (Go Onion!) Maybe because Tor manages it’s own routing it worked … in any event it allowed a search which led to a simple super user command to get it up again.
The resolv.conf file needs to be updated. Run this command as root:
netconfig update -f
NetworkManager thought resolv.conf had changed and decided not to manage it any more.; that command basically says “ignore all usermade changes and recreate all network conf files”