No internet access after upgrade

English Network/Internet
#1

I just did a large patch on my opensuse11.3 system (upgrade of all installed packages), and whilst my network interface works, I cannot get past my router onto the internet.

I can connect to other computers on my network (here at home), I have an IP address via dhcp from my router, but I cannot get internet access, either from thunderbird, firefox, or simply by ‘ping bbc.co.uk’.
Clearly the computer was connected to the internet just fine minutes before since I did the large patch!
Also, my other computers CAN still connect to the internet.

Any ideas as to what the problem is and how i can debug it? It is just too coincidental I have upgraded everything and now somethings amiss!

If it’s relevant, my router is a netgear WGR614v9.

A few things I’ve tried…


linuxthinkpad:/var/log # /sbin/route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     *               255.255.255.0   U     0      0        0 eth1
link-local      *               255.255.0.0     U     0      0        0 eth1
loopback        *               255.0.0.0       U     0      0        0 lo

linuxthinkpad:/var/log # ifconfig
eth0      Link encap:Ethernet  HWaddr 00:16:36:0B:A1:11  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:16 

eth1      Link encap:Ethernet  HWaddr 00:13:CE:A4:F2:60  
          inet addr:192.168.1.14  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::213:ceff:fea4:f260/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:181573 errors:0 dropped:0 overruns:0 frame:0
          TX packets:125158 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:189408193 (180.6 Mb)  TX bytes:16888096 (16.1 Mb)
          Interrupt:21 Base address:0x4000 Memory:c0002000-c0002fff 

irda0     Link encap:IrLAP  HWaddr f4:87:e9:48  
          UP RUNNING NOARP  MTU:2048  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:8 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

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:202 errors:0 dropped:0 overruns:0 frame:0
          TX packets:202 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:17456 (17.0 Kb)  TX bytes:17456 (17.0 Kb)

pan0      Link encap:Ethernet  HWaddr F6:5A:A8:B5:7E:4D  
          inet6 addr: fe80::f45a:a8ff:feb5:7e4d/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:468 (468.0 b)

linuxthinkpad:/var/log # cat /etc/resolv.conf 
### /etc/resolv.conf file autogenerated by netconfig!
#
# Before you change this file manually, consider to define the
# static DNS configuration using the following variables in the
# /etc/sysconfig/network/config file:
#     NETCONFIG_DNS_STATIC_SEARCHLIST
#     NETCONFIG_DNS_STATIC_SERVERS
#     NETCONFIG_DNS_FORWARDER
# or disable DNS configuration updates via netconfig by setting:
#     NETCONFIG_DNS_POLICY=''
#
# See also the netconfig(8) manual page and other documentation.
#
# Note: Manual change of this file disables netconfig too, but
# may get lost when this file contains comments or empty lines
# only, the netconfig settings are same with settings in this
# file and in case of a "netconfig update -f" call.
#
### Please remove (at least) this line when you modify the file!
search ourhome
nameserver 192.168.1.1

linuxthinkpad:/var/log # uname -a
Linux linuxthinkpad 2.6.34.8-0.2-default #1 SMP 2011-04-06 18:11:26 +0200 i686 i686 i386 GNU/Linux

I notice from ifconfig this that there’s a new “pan0” device which looks like an ipv6 interface - is that a likely contender?

Thanks in advance

#2

I disabled ipv6, rebooted, and it has made no difference, so it’s not that!

#3

On 05/11/2011 05:36 PM, jonb62 wrote:

> linuxthinkpad:/var/log # /sbin/route
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use Iface
> 192.168.1.0 * 255.255.255.0 U 0 0 0 eth1
> link-local * 255.255.0.0 U 0 0 0 eth1
> loopback * 255.0.0.0 U 0 0 0 lo

The problem is here. What routing rule would be used to get to the outside
world? The first one only gets to 192.168.1.X. You need a rule like


0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth1

The command you need to enter is

sudo /sbin/route add default gw 192.168.1.1

#4

Thanks - that works.
Clearly this is new to me, and I haven’t had to ever do this before (I’ve been using opensuse for many generations), so my question is:
Why has this happened?
It must have been something that occurred during the patch process - I certainly haven’t fiddled with anything to do with this :wink:

Thanks again