https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254725 --- Comment #4 from Sergey V. Dyatko <sergey.dyatko at gmail.com> --- (In reply to Christos Chatzaras from comment #3) It seems that with net.inet.tcp.sack.enable disabled panics is gone -- You are receiving this mail because: You are the assignee for the bug.