Anyone with enough hardware can observe this sort of problem: http://www.evanjones.ca/tcp-and-ethernet-checksums-fail.html http://www.evanjones.ca/tcp-and-ethe

Anyone with enough hardware can observe this sort of problem: http://www.evanjones.ca/tcp-and-ethernet-checksums-fail.html http://www.evanjones.ca/tcp-and-ethernet-checksums-fail.html When The CRC and TCP Checksum Disagree: http://conferences.sigcomm.org/sigcomm/2000/conf/paper/sigcomm2000-9-1.pdf http://conferences.sigcomm.org/sigcomm/2000/conf/paper/sigco... Alternately, just look at "netstat -s" for any machine on the Internet talking to a bunch of others. Here's the score for the main web host of the Internet Archive Wayback Machine: 3088864840 segments received 2401058 bad segments received.