Hi all,
Some how I have an extra active route setup in my CentOS 4.4 system (that unfortunately at a data center a ways away from me). I have tried using /sbin/route del -net xxx.xxx.xxx.xxx but get an error.
I also have Webmin installed and I can delete the route from there, but on applying the network config, the route comes back. I have no idea where it is coming from. It is preventing me from getting out of the box to any other services.
Any suggestions greatfully accepted!
Thanks
Dale
what is the route? and what is the error? maybee give some more information about what kind of distro it is and what you are actually trying to delete..
thanks
Quoting Dale lists@ehome.net:
Hi all,
Some how I have an extra active route setup in my CentOS 4.4 system (that unfortunately at a data center a ways away from me). I have tried using /sbin/route del -net xxx.xxx.xxx.xxx but get an error.
I also have Webmin installed and I can delete the route from there, but on applying the network config, the route comes back. I have no idea where it is coming from. It is preventing me from getting out of the box to any other services.
Any suggestions greatfully accepted!
Thanks
Dale _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Thanks
- Nathan - http://www.linuxcare.ca
Hello,
Distro is a standard CentOS 4.4. Nothing unusual is installed or is running on this box as it was just setup a couple of weeks ago.
As root, I type: ./route del -net 169.254.0.0
which returns an error of:
SIOCDELRT: Invalid argument
This route shows up in Webmin as well as when I type: ./route
This is not configured as a network interface anyplace I can see. eth0 has a legitimate, public IP assigned to it
Dale
Nathan wrote:
what is the route? and what is the error? maybee give some more information about what kind of distro it is and what you are actually trying to delete..
thanks
Quoting Dale lists@ehome.net:
Hi all,
Some how I have an extra active route setup in my CentOS 4.4 system (that unfortunately at a data center a ways away from me). I have tried using /sbin/route del -net xxx.xxx.xxx.xxx but get an error.
I also have Webmin installed and I can delete the route from there, but on applying the network config, the route comes back. I have no idea where it is coming from. It is preventing me from getting out of the box to any other services.
Any suggestions greatfully accepted!
Thanks
Dale _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Thanks
- Nathan
- http://www.linuxcare.ca
-> -----Original Message----- -> From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On -> Behalf Of Dale -> Sent: Friday, September 22, 2006 12:01 AM -> To: CentOS mailing list -> Subject: Re: [CentOS] Problem deleting an active route -> -> Hello, -> -> Distro is a standard CentOS 4.4. Nothing unusual is installed or is -> running on this box as it was just setup a couple of weeks ago. -> -> As root, I type: -> ./route del -net 169.254.0.0 -> -> which returns an error of: -> -> SIOCDELRT: Invalid argument -> -> This route shows up in Webmin as well as when I type: ./route -> -> This is not configured as a network interface anyplace I can see. eth0 -> has a legitimate, public IP assigned to it -> -> Dale
Im pretty sure if you want to delete a route that you need to use a more verbose syntax with netmask and gw and etc.
When I do a route on one of my boxes it comes up
[root@srv ~]# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.0.0 * 255.255.255.0 U 0 0 0 eth1 200.55.44.0 * 255.255.255.0 U 0 0 0 eth0 169.254.0.0 * 255.255.0.0 U 0 0 0 eth1 default br1.abbacomm.ne 0.0.0.0 UG 0 0 0 eth0
eth0 is active and up. Eth1 is not active and not plugged into anything.
I show the route as well only because I have an inactive interface meaning it is not admin up and so there really is no route because the interface isn't talking to another external interface.
There is no reason to delete it that I can think of.
If it is not on your active interface, down the other one as long as you can get back in the machine and forget about it???
What does your routing table say?
What does ifconfig say?
- rh
-- Robert - Abba Communications Computer & Internet Services (509) 624-7159 - www.abbacomm.net
Hello,
Thanks for the reply, I have pasted my complete routing table below.
Email Lists wrote:
-> -----Original Message----- -> From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On -> Behalf Of Dale -> Sent: Friday, September 22, 2006 12:01 AM -> To: CentOS mailing list -> Subject: Re: [CentOS] Problem deleting an active route -> -> Hello, -> -> Distro is a standard CentOS 4.4. Nothing unusual is installed or is -> running on this box as it was just setup a couple of weeks ago. -> -> As root, I type: -> ./route del -net 169.254.0.0 -> -> which returns an error of: -> -> SIOCDELRT: Invalid argument -> -> This route shows up in Webmin as well as when I type: ./route -> -> This is not configured as a network interface anyplace I can see. eth0 -> has a legitimate, public IP assigned to it -> -> Dale
Im pretty sure if you want to delete a route that you need to use a more verbose syntax with netmask and gw and etc.
When I do a route on one of my boxes it comes up
[root@srv ~]# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.0.0 * 255.255.255.0 U 0 0 0 eth1 200.55.44.0 * 255.255.255.0 U 0 0 0 eth0 169.254.0.0 * 255.255.0.0 U 0 0 0 eth1 default br1.abbacomm.ne 0.0.0.0 UG 0 0 0 eth0
eth0 is active and up. Eth1 is not active and not plugged into anything.
Here is my complete route table: ./route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 69.13.211.0 * 255.255.255.192 U 0 0 0 eth0 169.254.0.0 * 255.255.0.0 U 0 0 0 eth0 default 69.13.211.1 0.0.0.0 UG 0 0 0 eth0
The big difference between mine and yours is that the 169.254.0.0 route is showing up on eth0 - which is the only port connected. I can get into the box, but the box can not get out to anyplace. I could be looking in the wrong place for the solution, I figured that this looks wrong to have this apparent self-assigned IP on my only active ethernet port.
I show the route as well only because I have an inactive interface meaning it is not admin up and so there really is no route because the interface isn't talking to another external interface.
There is no reason to delete it that I can think of.
If it is not on your active interface, down the other one as long as you can get back in the machine and forget about it???
This is my only active port. If I shut it down, the machine goes away.
What does your routing table say?
see above
What does ifconfig say?
./ifconfig eth0 Link encap:Ethernet HWaddr 00:30:48:89:09:EC inet addr:69.13.211.30 Bcast:69.13.211.63 Mask:255.255.255.192 inet6 addr: fe80::230:48ff:fe89:9ec/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:301425 errors:0 dropped:0 overruns:0 frame:0 TX packets:39974 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:21343464 (20.3 MiB) TX bytes:8486082 (8.0 MiB) Base address:0x2000 Memory:c8200000-c8220000
lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:2627 errors:0 dropped:0 overruns:0 frame:0 TX packets:2627 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3340381 (3.1 MiB) TX bytes:3340381 (3.1 MiB)
- rh
-- Robert - Abba Communications Computer & Internet Services (509) 624-7159 - www.abbacomm.net
Dale
While the route man page can be a little confusing, there are plenty of examples on how to delete a route via google:
route del -net 169.254.0.0 netmask 255.255.0.0
worksforme
Almost sounds like a dhcp issue for some reason huh... kinda like how winblah deals with not getting a network huh?
Yet, changing the zeroconf network to "no" should take care of it
And most importantly, check to see if you have a default gateway ip address.
That realistically is why you cannot get out, the machine works on local net yet doesn't know where to send packets to other than local net
- rh
-- Robert - Abba Communications Computer & Internet Services (509) 624-7159 - www.abbacomm.net
Dale wrote:
As root, I type: ./route del -net 169.254.0.0
That is link local and nothing to worry about. For details see RFC 3330 and RFC 3927.
RFC 3330:
169.254.0.0/16 - This is the "link local" block. It is allocated for communication between hosts on a single link. Hosts obtain these addresses by auto-configuration, such as when a DHCP server may not be found.
These addresses shouldn't get routed anyway.
Regards,
Ralph
Hello Ralph and Johnny,
Thanks for the information and suggestions.
Ralph Angenendt wrote:
Dale wrote:
As root, I type: ./route del -net 169.254.0.0
That is link local and nothing to worry about. For details see RFC 3330 and RFC 3927.
RFC 3330:
169.254.0.0/16 - This is the "link local" block. It is allocated for communication between hosts on a single link. Hosts obtain these addresses by auto-configuration, such as when a DHCP server may not be found.
These addresses shouldn't get routed anyway.
Regards,
Ralph
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
On Fri, 2006-09-22 at 02:01 -0500, Dale wrote:
Hello,
Distro is a standard CentOS 4.4. Nothing unusual is installed or is running on this box as it was just setup a couple of weeks ago.
As root, I type: ./route del -net 169.254.0.0
This is called the Zeroconf network ... it happens automatically in many OSes (Windows since win98, Mac, many Linuxes) and is designed to make the machine reachable on a network even with a botched network setup.
You can make it go away with this entry in /etc/sysconfig/network:
NOZEROCONF=yes
Then restart the network service ... "service network restart" (or reboot the machine)
However, this does remove some functionality. For more info about zeroconf and what it can do see:
http://files.zeroconf.org/draft-ietf-zeroconf-ipv4-linklocal.txt
and
http://www.linux.com/article.pl?sid=06/06/15/2012219
-------------
If your network is properly configured, you should be able to turn off Zeroconf with no problems.
<snip>
Thanks, Johnny Hughes
do you have multiple interfaces on this machine by chance?
Quoting Dale lists@ehome.net:
Hello,
Distro is a standard CentOS 4.4. Nothing unusual is installed or is running on this box as it was just setup a couple of weeks ago.
As root, I type: ./route del -net 169.254.0.0
which returns an error of:
SIOCDELRT: Invalid argument
This route shows up in Webmin as well as when I type: ./route
This is not configured as a network interface anyplace I can see. eth0 has a legitimate, public IP assigned to it
Dale
Nathan wrote:
what is the route? and what is the error? maybee give some more information about what kind of distro it is and what
you
are actually trying to delete..
thanks
Quoting Dale lists@ehome.net:
Hi all,
Some how I have an extra active route setup in my CentOS 4.4 system (that unfortunately at a data center a ways away from me). I have tried using /sbin/route del -net xxx.xxx.xxx.xxx but get an error.
I also have Webmin installed and I can delete the route from there, but on applying the network config, the route comes back. I have no idea where it is coming from. It is preventing me from getting out of the box to any other services.
Any suggestions greatfully accepted!
Thanks
Dale _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Thanks
- Nathan
- http://www.linuxcare.ca
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Thanks
- Nathan - http://www.linuxcare.ca
Hello,
Nathan wrote:
do you have multiple interfaces on this machine by chance?
Yes, there are multiple interfaces, but only 1 connected.
Quoting Dale lists@ehome.net:
Hello,
Distro is a standard CentOS 4.4. Nothing unusual is installed or is running on this box as it was just setup a couple of weeks ago.
As root, I type: ./route del -net 169.254.0.0
which returns an error of:
SIOCDELRT: Invalid argument
This route shows up in Webmin as well as when I type: ./route
This is not configured as a network interface anyplace I can see. eth0 has a legitimate, public IP assigned to it
Dale
Nathan wrote:
what is the route? and what is the error? maybee give some more information about what kind of distro it is and what
you
are actually trying to delete..
thanks
Quoting Dale lists@ehome.net:
Hi all,
Some how I have an extra active route setup in my CentOS 4.4 system (that unfortunately at a data center a ways away from me). I have tried using /sbin/route del -net xxx.xxx.xxx.xxx but get an error.
I also have Webmin installed and I can delete the route from there, but on applying the network config, the route comes back. I have no idea where it is coming from. It is preventing me from getting out of the box to any other services.
Any suggestions greatfully accepted!
Thanks
Dale
-
Cian Cullinan -
Dale -
Email Lists -
Johnny Hughes -
Nathan -
Ralph Angenendt