[SOLVED] multiple ppp tunnels and eth0... dns priority in resolv.conf

deadeyes · 12-02-2009, 10:08 AM

Hi all,

I have multiple ppp tunnels and an ethernet interface.

Depending on where I am, I need ppp tunnels to get to the office or just an eth0 interface.

Recently I configured my linux so I can use my mobile phone to get on the internet.
When using wired, I only need one ppp tunnel. Then the dns settings of this tunnel should have priority on the eth0 settings.

When I go online using my mobile phone, I want that the dns settings of this will get precedence.

And sometimes I need to log in to the office through my mobile phone.
This means I need 2 tunnels and the dns settings for the office should have priority on those from the tunnel to my mobile phone.

Normally resolvconf can handle this problem.

However, I am searching how I can say what "nameserver" entries should come first (depending on what interface does provide them).
I am pretty sure this is possible to change the order in a config file but I can't seem to find it.

I am using Gentoo... maybe there is something specific for my distro.

Help would be very appreciated!

GrapefruiTgirl · 12-02-2009, 01:37 PM

This may not be the "best" place to read the solution, but the comments on this page: http://docs.openmoko.org/trac/ticket/2056 seem to address exactly what you describe, as well as mentioning some network configuration files.

It does not mention a particular distro that I can tell, but the situation sounds similar enough to what you wrote, that it may give you the clues you need to get it sorted.

Kind regards,
Sasha

deadeyes · 12-03-2009, 02:29 AM

Quote:

Originally Posted by GrapefruiTgirl

This may not be the "best" place to read the solution, but the comments on this page: http://docs.openmoko.org/trac/ticket/2056 seem to address exactly what you describe, as well as mentioning some network configuration files.

It does not mention a particular distro that I can tell, but the situation sounds similar enough to what you wrote, that it may give you the clues you need to get it sorted.

Kind regards,
Sasha

Thank you for your effort but it does not really solves my problem.
I already have resolvconf installed.
I just thought there was some possibility to specify the order of interface dns entries.
This is related to resolvconf as this tool adds the dns entries in the actual /etc/resolv.conf

deadeyes · 12-03-2009, 03:15 PM

This topic is solved...

Thanks to the Gentoo forums!
http://forums.gentoo.org/viewtopic-p...5.html#6082565

It seems that this feature is barely known or documented.

In /etc/resolvconf.conf:
interface_order="lo tun0 tun1 eth0 *"

Add such a line to have the order of the dns entries changed.

I hope this helps some other people!