From hjj@geiger.tele.dk  Wed Sep  9 03:42:23 1998
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Date: Wed, 9 Sep 1998 12:42:12 +0200 (CEST)
From: Hans J Jakobsen <hjj@geiger.tele.dk>
Reply-To: hjj@datacom.dk400.dk
To: FreeBSD-gnats-submit@freebsd.org
Subject: PPP connection dies after ping of certain size packets
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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:    brian
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Sep  9 03:50:00 PDT 1998
>Closed-Date:    Wed Sep 9 16:27:25 PDT 1998
>Last-Modified:  Thu Sep 10 03:30:01 PDT 1998
>Originator:     Hans J Jakobsen
>Release:        FreeBSD 2.2.7-RELEASE i386
>Organization:
TeleDanmark Net
>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:
	
	
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: brian 
State-Changed-When: Wed Sep 9 16:27:25 PDT 1998 
State-Changed-Why:  
Ppp's mine 


Responsible-Changed-From-To: freebsd-bugs->brian 
Responsible-Changed-By: brian 
Responsible-Changed-When: Wed Sep 9 16:27:25 PDT 1998 
Responsible-Changed-Why:  
Ppp's mine 

From: Hans J Jakobsen <hjj@news1.tele.dk>
To: freebsd-gnats-submit@freebsd.org
Cc:  Subject: Re: bin/7870: PPP connection dies after ping of certain size packets
Date: Thu, 10 Sep 1998 12:26:10 +0200 (MET DST)

 The problem was with Cisco 11.3 (2.6). 11.3 (5.1) is OK.
 /hjj
 
 Tele Danmark Erhverv, Data Divisionen      TLF: +45 8947 3339
 Hans J Jakobsen                            FAX: +45 8947 3308
 Skanderborgvej 234 st tv
 DK 8620 Viby J    Danmark             Internet:hjj@datacom.dk400.dk
 
>Unformatted:

All of the examples work fine for me.  Please read the FAQ
at http://www.FreeBSD.org.

Is the peer responding at all ?  Does the peer respond to
ECHO LQR or LQR packets ?

If no errors have occured and ppp is sending stuff and not
seeing any response, you will need to get your ISP involved.
We need to know why their ppp isn't responding....
