to them) which is causing complaints from some of our customers and
forcing us to make routing adjustments as the customers notice
MFN/AboveNet has broken our connectivity to these destinations.
We've noticed that one of our upstreams (Global Crossing) has introduced
ICMP rate limiting 4/5 days ago. This means that any traceroutes/pings
through them look awful (up to 60% apparent packet loss). After
contacting their NOC, they said that the directive to install the ICMP
rate limiting was from the Homeland Security folks and that they would not
remove them or change the rate at which they limit in the foreseeable
What are other transit providers doing about this or is it just GLBX?