Date: Wed, 9 Sep 1998 12:42:12 +0200 (CEST) From: Hans J Jakobsen <hjj@geiger.tele.dk> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: bin/7870: PPP connection dies after ping of certain size packets Message-ID: <199809091042.MAA02023@geiger.tele.dk>
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>Number: 7870
>Category: bin
>Synopsis: PPP connection dies after ping of certain size packets
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Sep 9 03:50:00 PDT 1998
>Last-Modified:
>Originator: Hans J Jakobsen
>Organization:
TeleDanmark Net
>Release: FreeBSD 2.2.7-RELEASE i386
>Environment:
The machine is connected to the internet through a dialup ppp connection.
>Description:
PPP is started.
ping with packet size 1500 is OK.
ping with packet size 1350 is OK.
ping with packet size 1472 or 1400 is NOT OK.
After a unsuccesful ping the connection is dead.
Closing and opening ppp gets connection back.
The symptoms are not there when the connetion to the Internet is
via Ethernet.
>How-To-Repeat:
/usr/sbin/ppp -background arcpop
Working in background mode
Using interface: tun0
PPP enabled.
$ /sbin/ping -c 5 -s 1350 www.ibm.com
PING www.ibm.com (204.146.18.33): 1350 data bytes
1358 bytes from 204.146.18.33: icmp_seq=0 ttl=242 time=851.656 ms
1358 bytes from 204.146.18.33: icmp_seq=1 ttl=242 time=840.556 ms
1358 bytes from 204.146.18.33: icmp_seq=2 ttl=242 time=840.600 ms
1358 bytes from 204.146.18.33: icmp_seq=3 ttl=242 time=840.643 ms
1358 bytes from 204.146.18.33: icmp_seq=4 ttl=242 time=840.358 ms
--- www.ibm.com ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 840.358/842.763/851.656/4.448 ms
$ /sbin/ping -c 5 -s 1400 www.ibm.com
PING www.ibm.com (204.146.18.33): 1400 data bytes
--- www.ibm.com ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
$ /sbin/ping -c 5 -s 1350 www.ibm.com
PING www.ibm.com (204.146.18.33): 1350 data bytes
--- www.ibm.com ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
$
>Fix:
>Audit-Trail:
>Unformatted:
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