On Tue, Mar 5, 2019 at 07:15 Rich Kulawiec <[email protected]> wrote: > On Mon, Mar 04, 2019 at 08:04:12AM +1100, Mark Andrews wrote: > > ICMP is NOT optional. > > I've pointed folks at this for years: > > ICMP Packet Filtering v1.2 > http://www.cymru.com/Documents/icmp-messages.html > > ---rsk >
Some of the networks that completely block ICMP are shocking. Best, -M<
