I am just wondering how many people have ICMP Destination Unreachables
disabled on their core routers. Could an CPE router, which may
encapsulate data, be able to depend on ICMP Unreachables to be sent to
it?
I know there are many cases where router implementations default it to
off (to not send ICMP DUs), but wondering who leaves it this way or
turns them on? Of when it defaults to on, who explicitly turns them off.
Thanks in advance,
Dino
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