misc/71469: default route to internet magically disappears with multihomed server

Meulemans Jeroen jeroen.meulemans at pandora.be
Tue Sep 7 10:10:21 PDT 2004


>Number:         71469
>Category:       misc
>Synopsis:       default route to internet magically disappears with multihomed server
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Sep 07 17:10:20 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Meulemans Jeroen
>Release:        4.8-4.10
>Organization:
na
>Environment:
FreeBSD be4.be 4.10-PRERELEASE FreeBSD 4.10-PRERELEASE #0: Mon Apr 26 15:36:41 CEST 2004
>Description:
Have server with 3 network cards:
* rl0: cable
* rl1 => tun0: ADSL
* xl0: internal

Made a script that makes you able to switch between ADSL and cable internet. The switch works perfectly, but after 5-7 days the default route magically disappears (route get default). If the server gets restarted and the ADSL is active from the start, then it will work forever. If I use the switch script it doesn't.
>How-To-Repeat:
Have tried it on FreeBSD 4.8-4.10 (problem is always there)

killall -KILL dhclient
killall -KILL natd
ifconfig rl0 delete
ppp -ddial ADSL_ISP > /dev/null
natd -dynamic -f /etc/natd.conf -n tun0
internet works perfectly but goes down after 5-7 days
if I switch from ADSL to cable same problem
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:


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