Network isolation?

[MR ZenWiz]

On Sat, Mar 5, 2022 at 1:08 PM Peter Flynn <peter at silmaril.ie> wrote:
>
:
>
> Check very carefully the /etc/hosts and the connection settings for eth1
> or whatever is used, and make sure that all the machine really do have
> the same Class C IP address, and that none of the machine is running its
> own DHCP server.
>
The only entries in either host's /etc/hosts file are for the default
localhost and a 127.0.1.1 entry for the hostname, plus the IPv6
settings, which I don't believe are involved and look perfectly
reasonable to me.

I did check both the hosts.allow and hosts.deny on both machines are
empty except for the comment header.

Still a puzzlement...

Mark