On 2018 Nov 20 16:33:02, you wrote to me:   
      
    ml>> and this was with ubuntu 18.04? server or one with a GUI? is that   
    ml>> #$(%!^ network-manager or systemd involved? is udev assigning the   
    ml>> proper interface name to the nic?   
      
    JS> Well.. I have installed Ubuntu 14.04, 16.04, 18.04, and 18.10 and   
    JS> Linux Mint 19.0, and CentOS v7. The OS at the time of the problem was   
    JS> Ubuntu 16.04. Once the problem occurred all versions of Ubuntu   
    JS> installed had the same problem.  While Mint and CentOS didn't have the   
    JS> same problem using the same integrated NIC. All installs were a   
    JS> complete wipe and a fresh install.   
      
   wow, you have been through everything... one of the things i was getting at   
   when asking about the nic drivers was if they were all using the same version   
   of the source code for that driver... apparently, though, the problem is higher   
    in the tree... you can get to the firewall but can't get out... IPv4 or IPv6   
   or both? i ask because i can do IPv6 internally to a point... i do not,   
   though... IPv6 is stopped at my firewall because it doesn't support IPv6 (yet)   
   and have all the mods i require... IPv4 just works... i've had a few machines   
   that i had to specifically disable IPv6 on so they would use only IPv4... until   
    my firewall supports IPv6, i'm not even worrying about it other then some   
   light reading here and there about it...   
      
   )\/(ark   
      
   Always Mount a Scratch Monkey   
   Do you manage your own servers? If you are not running an IDS/IPS yer doin' it   
   wrong...   
   ... My train of thought is a Mag-Lev.   
   ---   
    * Origin:  (1:3634/12.73)