nanog mailing list archives

Re: G root servers unreachable via ICMP(v6)


From: Christopher Morrow <morrowc.lists () gmail com>
Date: Tue, 16 May 2023 14:00:10 -0400

On Tue, May 16, 2023 at 4:37 AM <borg () uu3 net> wrote:

So, DoD does NOT have capacity to answer those little ICMP echo
request packets? Heh.. Anyway, this is IMO terrible practice.

why?

Cutting PING means you are hurting your basic troubleshooting.
Is that thing even plugged in? Maybe Firewall misconfiguration?

it means you need to use the tool (dig, host, nslookup) that talks to
the service being offered.
ping is basically meaningless as a test for 'is the service working'
on a dns server.


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