Ubuntu 16.04 - Where is IP4.ADDRESS set and/or stored?

[chili555]

Any thoughts? Should dhcp be true?

Not if you want a static address. See my example above.

What, exactly, is http://192.168.80.170/ and why do you want to reach it?

I doin't think you shoud eliminate the 127.0.1.1 line in /etc/hosts. For comparison, my hosts file reads, in part:

127.0.0.1       localhost
127.0.1.1       T440p

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

Where T440p is the name of my computer and agrees with:

cat /etc/hostname

mydomain@ubuntu07

This suggests that the hostname is ubuntu07. I believe that should be reflected in hosts opposite 127.0.1.1.

Please make some corrections, test and I'll check in tomorrow.

[ralph+shnelvar]

chili555, I want to say thank you so very much for your help.

As usual, when one cannot find a bug, one is likely looking in the wrong place.

I was so frustrated at not being able to track down why things were not working on 18.04 I reinstalled 16.04.

Things did not work in 16.04. Huh? I have another machine running 16.04 where everything works.

All the stuff in my new 16.04 was nearly identical to the 16.04 on my other machine. A real head scratcher.

After pulling out the last strands of hair on my head I found the problem. It was in the VMWare setup of the network adapter. Specifically, on the machine that works, I had the adapter set to bridged. On the one that was giving bizarre results the network adapter was set to NAT.

Again, chili55, I thank you for your time and effort. I hope all of this helps others.