An anonymous reader writes: All it takes is a quick Google search to see that the Intel 82574L ethernet controller has had at least a few problems. Including, but not necessarily limited to, EEPROM issues, ASPM bugs, MSI-X quirks, etc. We spent several months dealing with each and every one of these. We thought we were done.
Using Ostinato I was able to craft various versions of this packet — an HTTP POST, ICMP echo-request, etc. Pretty much whatever I wanted. With a modified HTTP server configured to generate the data at byte value (based on headers, host, etc) you could easily configure an HTTP 200 response to contain the packet of death — and kill client machines behind firewalls!