[outages] Ping to Google 8.8.8.8

[Stephane Bortzmeyer]

On Tue, Feb 08, 2022 at 07:33:52PM +0000,
 Justin Krejci via Outages <outages at outages.org> wrote 
 a message of 52 lines which said:

> Seeing some hosts and not others get no reply to ICMP pings from the
> Minneapolis, MN area. I checked using HE's looking glass, 1 of their
> 2 Minneapolis routers gets no replies. Since many use and assume
> 8.8.8.8 is invincible, this has now started setting off monitoring
> alerts. DNS queries so far seem unaffected.

Replying to ICMP echoes is not part of the service Google Public DNS
officially does, so it is possible that they sometimes filter and/or
rate-limit ICMP echo. It's not an outage.