[c-nsp] IPv6 SSH session disconnects with 12.2(31)SB2

[Daniel Roesen]

Hi,

before opening a case, does anybody else notice IPv6 SSH sessions
to 12.2(31)SB2 routers often breaking up while typing?

I've now managed to trigger it while running the (expensive) "debug ip
ssh":

SSH client says: "Connection reset by peer"

Last packets received are an ACK and two RST from the router.

debug log showing:

Jan 14 00:55:24.005 CET: SSH2 0: send: len 32 (includes padlen 17)
Jan 14 00:55:24.005 CET: SSH2 0: done calc MAC out #280
Jan 14 00:55:26.009 CET: %SYS-3-CPUHOG: Task is running for (2004)msecs,
more than (2000)msecs (0/0),process = Logger.
-Traceback= 60AAC6BC 60AAC644 60AACE94 608EFBC4 608EECA8 608EF3B4
608F1340 
Jan 14 00:55:26.737 CET: SSH2 0: send: len 32 (includes padlen 17)
Jan 14 00:55:26.737 CET: SSH2 0: done calc MAC out #281
Jan 14 00:55:27.529 CET: SSH0: Session disconnected - error 0x0A

The CPUHOG one is prolly because of the large amount of lines logged by
"debug ip ssh" and is probably no factor. So the only thing actually
giving a hint on the break-up is the last line.

Looking at the CCO bug database didn't reveal anything. Does anybody
else here can replicate this?

Effect wasn't seen with 12.2(28)S5.


Best regards,
Daniel

-- 
CLUE-RIPE -- Jabber: dr at cluenet.de -- dr at IRCnet -- PGP: 0xA85C8AA0