Packet of Death interrupting Intel-NICs

As reported by Kristian Kielhofner there seems to be an issue in some Intel NICs shipped with the 82475-chip onboard. Packets with certain content causes the NIC to fail, which results in a disconnect and traffic disruption.Quite interesting, as the failure was more or less found by accident during drops of SIP-Calls. During the SDP-Sessions Kris recognized some weird Traffic (duplicate Audio Offers, some other traffic duplications) followed by a “link down”. Yes, link down. Combined with a lights out at the switch and loss of communication between the computer system and the PHY on the NIC. Short and…

Read More