On Mon, 18 Jan 2016 01:53:05 -0500, [email protected] (Brian Marcotte) wrote:
> Since upgrading to NetBSD-7.0, several of our users started reporting > occasional SSH disconnects from our servers with a message like one of > these: > > Corrupted MAC on input. Disconnecting: Packet Corrupt > > ssh_dispatch_run_fatal: Connection to <ip>: message authentication > code incorrect > > These are reported from people using a variety of clients like OpenSSH > on FreeBSD and MAC or PuTTY on Windows. > > Has anyone else experienced this since upgrading to NetBSD-7? I saw them frequently when connected to a machine running -current (7.99.*), but usually only under heavy traffic (e.g., building a release). Searching t3h intarw3bz suggested NIC problems (broadcom hardware offload functions) to faulty memory. The odd thing was that it only happened when I connected to that machine "directly" (nothing but routers/switches between my host (netbsd-7/i386) and it (netbsd-HEAD i386)). If I SSH'd to any other machine first--whether to another machine on the same switch as the problem machine or to machine on a different subset of routers--and then SSH'd to the problem machine, the problem disappeared. The intermediate machines on the same switch as the problem machine were running NetBSD-7 (either i386 or amd64). The one on a different subset of routers was running FreeBSD/amd64 10.1-STABLE. Since then I have had the machine on my own LAN and it did not exhibit the problem. -- |/"\ John D. Baker, KN5UKS NetBSD Darwin/MacOS X |\ / jdbaker[snail]mylinuxisp[flyspeck]com OpenBSD FreeBSD | X No HTML/proprietary data in email. BSD just sits there and works! |/ \ GPGkeyID: D703 4A7E 479F 63F8 D3F4 BD99 9572 8F23 E4AD 1645
