Hello mark,

> On 2018 Nov 20 07:02:48, you wrote to me:

>> That was my thought at one time also.

> ahhh...

>> Again the fact that I don't understand is the connection problem just
>> suddenly appeared and no changes had been made on my end that
>> could/might have caused the problem.

> no driver updates or anything like that? what nic are you using and what
> drivers are loading for it?

Nope. I had been using the same integrated NIC that all versions of Ubuntu
Linux that I had installed on that PC saw and installed drivers. I in fact
had temporarily disabled the integrated NIC and tried both USB based NIC 
which Ubuntu immediately saw and installed. I also installed a PCI based
Intel dual port NIC and installed it using it's Linux drivers and Ubuntu
saw the PCI NIC had the same connection issue.

>> During the installs both Ubuntu and Mint saw the network interface and
>> got DHCP assigned IP's. But Ubuntu couldn't connect to acquire any
>> updated and third party files. But... Linux Mint could acquire any
>> files it needed without any apparent problem.

> and this was with ubuntu 18.04? server or one with a GUI?
> is that #$(%!^ network-manager or systemd involved?
> is udev assigning the proper interface name to the nic?

Well.. I have installed Ubuntu 14.04, 16.04, 18.04, and 18.10 and Linux
Mint 19.0, and CentOS v7. The OS at the time of the problem was Ubuntu
16.04. Once the problem occurred all versions of Ubuntu installed had the
same problem.  While Mint and CentOS didn't have the same problem using the
same integrated NIC. All installs were a complete wipe and a fresh install.


Jeff

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