Looks like the issue happened on master node/in the admin network.
Since network is unreachable ICMP message came from master node but our HN.
At the same time all the packages requested by two other nodes was successfully installed and, note, DNS resolve for archive.ubuntu.com passed successfully.
Looks like the issue happened on master node/in the admin network.
Since network is unreachable ICMP message came from master node but our HN.
At the same time all the packages requested by two other nodes was successfully installed and, note, DNS resolve for archive.ubuntu.com passed successfully.