LAN works, no internet, routing problem [Solved]

Message

Jaglover · Post by **Jaglover** » Mon Jan 14, 2008 10:07 pm

I use my wife's PC as distcc helper. A couple hours ago I noticed it's down. I couldn't start it any more, "attempting to kill init" was as far as I got. OK, PSU was expired, I replaced it. Booted from HDD. Everything looks nice. Except direct internet connection does not work! Firefox through proxy - works fine. NFS volume mounts fine. I can ssh into that box. I can ssh out from that box - but only locally. Every address outside results in "network is unreachable" message.

(No firewall)
I started it up with GRML and ran fsck. All clean. Network works like it should.

I even do not know where to look, any ideas are welcome.

rokstar83 · Post by **rokstar83** » Mon Jan 14, 2008 10:48 pm

Jaglover wrote:I use my wife's PC as distcc helper. A couple hours ago I noticed it's down. I couldn't start it any more, "attempting to kill init" was as far as I got. OK, PSU was expired, I replaced it. Booted from HDD. Everything looks nice. Except direct internet connection does not work! Firefox through proxy - works fine. NFS volume mounts fine. I can ssh into that box. I can ssh out from that box - but only locally. Every address outside results in "network is unreachable" message. (No firewall)
I started it up with GRML and ran fsck. All clean. Network works like it should.
I even do not know where to look, any ideas are welcome.

DNS issue? Have you tried pinging something outside your local network by ip instead of name?

Jaglover · Post by **Jaglover** » Mon Jan 14, 2008 10:52 pm

Nope, names resolve, I run local DNS cache. "Network is unreachable" comes with IP address as well.

Jaglover · Post by **Jaglover** » Tue Jan 15, 2008 3:59 am

Code: Select all

# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.2.254   255.255.255.255 UGH   0      0        0 eth0
192.168.2.0     0.0.0.0        255.255.255.0    U     0      0        0 eth0
127.0.0.0       0.0.0.0       255.0.0.0         U     0      0        0 lo

As you can see with this mask connection is not possible. I wonder where it comes from

tarpman · Post by **tarpman** » Tue Jan 15, 2008 5:17 am

Let's see /etc/conf.d/net.

vktgz · Post by **vktgz** » Tue Jan 15, 2008 7:11 am

I have the same problem. Yesterday i upgraded system and world. Everything was working fine until i rebooted - after reboot internet is not working. LAN is working fine, i can ping router, but I cant ping anything outside - "network is unreachable". I think the problem is with init scripts, emerge upgraded baselayout. I try to downgrade baselayout when I get back home.

Emopig · Post by **Emopig** » Tue Jan 15, 2008 9:10 am

Had the same problem here. New baselayout fscked over my networking over when I rebooted.

I could an ping my router and another machine on said router (basically any machine in my subnet). I had to manually fix the route table, not impressive. The base layout update was a minor release and there I was with a static IP on a single Ethernet interface and no network access.

It took me half an hour this morning to fix it, I have no idea how it could mess up when the masking is explicitly specified in /etc/conf.d/net

Code: Select all

andrew@ziggy ~ $ cat /etc/conf.d/net
modules=("ifconfig")
config_eth0=("192.168.1.2 netmask 255.255.255.0")
routes_eth0=("default via 192.168.1.1")

skellr · Post by **skellr** » Tue Jan 15, 2008 10:28 am

Yeah, me too.

Bug 205894 net.eth0 improperly adds default gateway.

gigli · Post by **gigli** » Tue Jan 15, 2008 11:43 am

Hi just wanted to say thanks, this solved my problem for now, i would never have found it on my own. I downgraded my baselayout.

gemini91 · Post by **gemini91** » Tue Jan 15, 2008 11:58 am

From past experience any time I have problems with my wireless,
the first thing I check is baselayout, So i did not waste much time
on this before backing it off. The problem was telling me that the key
was not right for the ESSID. I didn't record the whole message but
it was real strange. Its been quite awhile since baselayout caused me
a problem

Jaglover · Post by **Jaglover** » Tue Jan 15, 2008 2:51 pm

Rainskellr, thanks for bugzilla link. They had solution there.

UberLord · Post by **UberLord** » Tue Jan 15, 2008 3:08 pm

Jaglover wrote:Rainskellr, thanks for bugzilla link. They had solution there.

You might want to comment on the bug to let the developers know the patch works then

To · Post by To » Fri Jan 18, 2008 2:10 pm

And I thought I was the one the screw things up;)
Thanx for the link to bugzilla.

Kollin · Post by **Kollin** » Sat Jan 19, 2008 5:47 pm

DOOOHHHHH, i almost killed my ISP

Thanx guys

LAN works, no internet, routing problem [Solved]

LAN works, no internet, routing problem [Solved]

Re: Mysterious network problem

thanks