[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Network issue

what happens if you just do the ifconfig command and then route? When networking grinds, I generally suspect a DNS problem or a firewall problem. I would assume restarting networking would bounce your firewall as well. Are both interfaces static or dhcp? Are you changing your DNS servers when you tryto swap over?

From: Bradley Alexander <storm@tux.org>
To: debian-user@lists.debian.org
Subject: Network issue
Date: 16 Jun 2003 21:18:15 -0400

Got a networking question. I have this box thats acting as a firewall.
Basically, its a PII/350 running Woody and gShield. eth0 is the external
interface (DSL) and eth1 is the internal interface. When Verizon screwed
him, he got cablemodem as a backup connection. So I added another
interface (all three are 3Com 3C905s).

The problem is that whether I go in and change /etc/network/interfaces
and restart networking or I manually go in and route del default the
Verizon interface and add the Comcast as the default route (using the
network info they gave me, but _not_ using DHCP), networking gets
severely confused (e.g. doing a route command can take 30 seconds or
more, can't pass traffic, etc). Switching back to the original
configuration doesn't help, either. It remains hopelessly confused until
you end up having to reboot. Once you reboot, it comes up normally, with
either interface as the gateway. Since this one of the interfaces is a
backup, I planned to write a script to automate the switchover. If I
have to reboot every time I have to switch, it defeats the purpose.

This should not be normal behavior for networking, but I'm not sure
where to look.

Bradley M. Alexander                |
gTLD SysAdmin, Security Engineer    |   storm [at] tux.org
Key fingerprints:
DSA 0x54434E65: 37F6 BCA6 621D 920C E02E  E3C8 73B2 C019 5443 4E65
RSA 0xC3BCBA91: 3F 0E 26 C1 90 14 AD 0A  C8 9C F0 93 75 A0 01 34
I argue very well. Ask any of my remaining friends. I can win an argument on any topic, against any opponent. People know this, and steer clear of me at parties. Often, as a sign of their great respect, they don't even invite me.
                -- Dave Barry

To UNSUBSCRIBE, email to debian-user-request@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org

Help STOP SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail

Reply to: