You checked the firewall?
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From: [log in to unmask] <[log in to unmask]> on behalf of Larry Linder <[log in to unmask]>
Sent: Tuesday, June 9, 2020 15:42
To: [log in to unmask] <[log in to unmask]>
Subject: sl 6.10 server no longer sees other computers on network

Caution:  EXTERNAL email

Oops:

I updated server to 6.10 and tried to add vcn and now server will no
longer see any other computers on network.

I used to see all linux boxes and "Workgroup" but now it simply sees
itself as an icon but it goes nowhere.  All services are running, so I
manged cross thread it.
Mad two mistakes by changing things after update to 6.10 before testing.

ssh is running as backups are good, I can ssh to any computer.

Any guesses as to what when wrong.