OK...got it. First I had changed listen_address to '*' but had left it
commented out<duh!>
When I fixed that I tried restarting and hit problem #2...
I had hba_conf settings like:
host all all 111.123.21.1/32 trust
didn't work but going back to old v7 format of
host all all 111.123.21.1 255.255.255.0 trust
did work.
Problem in my definition?