Red Hat Bugzilla – Bug 114867
ISDN Dial on Demand, no default route after ifdown, some other problems with default route
Last modified: 2015-01-07 19:07:11 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; de-AT; rv:1.4) Gecko/20030922 Description of problem: I create my ISDN provider by name "brickxmp" with Dial on Demand. /etc/sysconfig/network-scripts ifcfg-eth0 ifcfg-eth1 ifcfg-brickxmp <-- ifcfg-ippp0 before the new program version (see Bug 91607) After the system was rebooted: netstat -r Kernel IP Routentabelle Ziel Router Genmask Flags MSS Fenster irtt Iface 172.16.39.0 * 255.255.255.0 U 0 0 0 eth0 172.16.38.0 * 255.255.255.0 U 0 0 0 ippp0 172.16.37.0 * 255.255.255.0 U 0 0 0 eth1 169.254.0.0 * 255.255.0.0 U 0 0 0 eth1 127.0.0.0 * 255.0.0.0 U 0 0 0 lo default 172.16.39.81 0.0.0.0 UG 0 0 0 eth0 The ifcfg-eth0 contains the parameter GATEWAY=172.16.39.81. The default route is set over eth0, but should be set over ippp0. Before this version of redhat-config-network the ISDN-interface name was always ippp0. This mistake comes from the loop in the if-up script and it was a random that I have found this mistake because my providername is "brickxmp". Next problem. Now correct the default route with: - ifdown brickxmp - ifup brickxmp netstat -r Kernel IP Routentabelle Ziel Router Genmask Flags MSS Fenster irtt Iface 172.16.39.0 * 255.255.255.0 U 0 0 0 eth0 172.16.38.0 * 255.255.255.0 U 0 0 0 ippp0 172.16.37.0 * 255.255.255.0 U 0 0 0 eth1 169.254.0.0 * 255.255.0.0 U 0 0 0 eth1 127.0.0.0 * 255.0.0.0 U 0 0 0 lo default 172.16.38.1 0.0.0.0 UG 0 0 0 ippp0 After timeout ISDN the default route will not set new. Rename ifcfg-brickxmp into ifcfg-ippp0. mv ifcfg-brickxmp ifcfg-ippp0 The ISDN default route will set now after timeout ISDN. It works correct again. I do not found, where the mistake in the scripts is. kisdndock is not in RHEL3, but I know, that this progamm can only work with the /etc/sysconfig/network-scripts/ifcfg-ipppx configfiles. To show the name of ISDN providers, kisdndock use the option PROVIDER=brickxmp in the ifcfg-ippp0. With /etc/sysconfig/network-scripts/ifcfg-brickxmp the kisdndock do not goes in the o.k. status (color gray) on the KDE desktop. The new convention for ISDN config filename is inconsequent. Also I see an other problem. Today it is a requirement, that you can define the order in which the interface comes up at boot time. All interfaces should be able to set the default route, if it is necessary. One order could be: lo -> ethx -> trx -> ipppx -> pppx This is an order were I think it is suggestive. Today your internet provider is over ADSL mostly, but if not, the ppp0 interface do not exist and ISDN is the default route. If you do not have a internet provider the LAN default route will be set. I think this can be a way for this problem. Version-Release number of selected component (if applicable): redhat-config-network-1.2.59-1, initscripts-7.31.9.EL-1 How reproducible: Always Steps to Reproduce: 1.configure ISDN and use a providename begins with a-d 2.reboot the system 3. Actual Results: - ISDN routing do not work correct - no default route after hangup Expected Results: should be work correct Additional info:
why do you set GATEWAY=172.16.39.81 anyway? where does that gateway lead to? to other internal networks? maybe a static route with network 172.16.0.0 gateway 172.16.39.81 would be better? default gateways should lead to every other ip address.
I use normaly an other system with other ip-addresses. Yesterday I create this Bugilla Bug on a system at work. There the GATEWAY=172.16.39.81 is realy a default gateway. For ISDN the ethernet configuration on the system is: DEVICE=eth0 BOOTPROTO=none HWADDR=00:50:04:42:57:FD IPADDR=128.0.5.12 NETMASK=255.255.255.0 ONBOOT=yes TYPE=Ethernet USERCTL=no PEERDNS=no GATEWAY=128.0.5.9 And so the default route at ippp0 is o.k.. Sorry for this mistake.
No default route after hangup, also with redhat-config-network-1.2.60-1.noarch.rpm. I must move the config file, that the default route is set after hangup. You see the problem, if you use static ip adresses and Dial on Demand. mv ifcfg-brickxmp ifcfg-ippp0 Only, if the config file is named ifcfg-ippp0 (for the first provider) it works. The name of the config file is generated from the tool and the providername is internal the nickname in the tool!
it looks like a bug in initscript.
i think it's a bug in your eth0 network setting that includes the default route too (GATEWAY=128.0.5.9). It will delete the ISDN default route! please remove the GATEWAYE line in your network config file ifcfg-eth0, it will fix your problem.
Yes, it works correct without the GATEWAY in eth0 network setting. I must remove the GATEWAY in eth0 network setting after kickstart installation by hand. So we need a feature request for initscript. You can close this bug.