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 "print(pack('H54','616e647265772e737461706c6573406e776e6574636f6d2e636f6d')) ;" "I don't think I'm alone when I say I'd like to see more and more planets fall under the ruthless domination of our solar system."