Comment 4 for bug 1830531

Before I get a chance to look into this later today, I'd like to note that the network device is not firewalling those packets since a few days ago before I installed 18.04 on this machine it was behaving as expected and the 16.04 machine mentioned in the OP is not being blocked (it is on a slightly more restrictive policy than this one, but neither block that port). As for the possibility of blocking outbound packets from the machine itself, this seems most likely, however, as mentioned, this is a new install and I have not added any firewalling policy that would block them, suggesting that it's an out of the box setting.

I'll report back on these and the other tests when I am at that location.