>Number:         4624
>Category:       kern
>Synopsis:       Lots of "ppp_deflate0: exceeded mru (1508 > 1504)" logged
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec  2 04:35:03 1997
>Last-Modified:
>Originator:     
>Organization:
Michael Eriksson <eramer@era-t.ericsson.se>
Ericsson Radio Systems AB
>Release:        1.3_BETA from 971129
>Environment:
System: NetBSD abro 1.3_BETA NetBSD 1.3_BETA (ABRO) #0: Sun Nov 30 04:44:58 MET 1997 eramer@abro:/usr/src/sys/arch/sparc/compile/ABRO sparc


>Description:

When I run PPP between a NetBSD/sparc (Sun IPX) and a NetBSD/i386 (IBM
Thinkpad 760CD), both running NetBSD 1.3_BETA, I get a large amount
(sometimes several per second) of "ppp_deflate0: exceeded mru (1508 >
1504)" messages logged from the kernel. This only get logged on the
sparc, even though I run PPP symmetrically. I use the default MTU/MRU
(1500), and use a serial cable between the machines.

I don't get these log entries when I run PPP between a sparc running
1.3_BETA and another sparc running 1.2.1, neither do I get it when I
run PPP between the 1.3_BETA i386 and the 1.2.1 sparc. I didn't have
this problem when running PPP between any machines, when they were
running 1.2.1.

>How-To-Repeat:

Run PPP between a sparc and a i386, both running NetBSD 1.3_BETA, do
some bulk transfer and watch the console on the sparc. (I'm not sure
this is universally repeatable, but it sure is repeatable between my
machines).

>Fix:

Simple fix: Remove the printf() call in ppp-deflate.c, or don't set
DEFLATE_DEBUG.

Correct fix: I don't know :-(.
>Audit-Trail:
>Unformatted: