Networks dropping all ICMP

A certain network last week decided to drop *all* icmp traffic across its
network for an indefinate period of time. They did this to reduce the
effects of Nachi. Apparently (their) Redback DSL concentrators cannot
filter only 92 byte packets, it's all or none.

Does anyone else care to respond publicly or privately with data about other
networks filtering all icmp traffic, not just malformed icmp? I'd like to
compile a list for troubleshooting, as these decisions are breaking things
for some customers.

Andrew Staples

perl -e

"I don't think I'm alone when I say I'd like to see more and more planets
under the ruthless domination of our solar system."

All? As in ... breaking path mtu discovery?