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ipsec and dns

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Hi all,

I use openswan as a road-warrior. No issues with the connection, all is
good. However, when the VPN is up, I'd like to use a different DNS
server (one across the VPN) than the one that the local DHCP server
provides. I have:

supersede domain-name-servers 192.168.168.10

in dhclient.conf, but this breaks when I'm out and about with no VPN
(such as roaming with a 3G card - but why that doesn't work is a
different matter).

Anyone know of anything that I can investigate to make this work more
seamlessly? In summary, when the VPN is up, I want DHCP to use the
above server. Down, I want it to use whatever DHCP suggests.

Antony

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ipsec and dns

Submitted by Kevin Ross on Fri, 2006-12-01 15:00.

I’m pretty sure the only way to do this is to do L2TP
over IPSec, and just configure your /etc/ppp/options.l2tpd file to specify your
DNS servers.  l2tpns may have similar options.

 

-- Kevin

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