Dual WAN - Loose DNS when WAN 1 goes down.
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Hi Just a quick niggle.
Running 1.2.2 with WAN (master) WAN2 (via a 3com bridged backup link).
All servers and PC's set to use router as primary DNS server and ISP DNS as secondary DNS sever - this is assigned via router DHCP server.
When modem 1 goes down (WAN) all PC's loose DNS resolution as the router DNS entries (system:general setup) only seem to apply to the WAN interface.
What is the correct way to resolve this? Is it to set up a rule so force the ISP DNS requests from the PC's (secondary DNS sever) out of WAN2?
however this doesn't help the router resolve when WAN goes down.
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You should only need pfSense as you dns server.
As I use OpenDNS I have made a static route for each IP, 1 going out of wan gateway and 1 for the wan2 gateway.
Diagnostics -> Traceroute can be used to test with.
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I have managed to break the IP stack on a few windows boxes in the past by incorrectly adding a static route and loosing connection.
Could you give me an example i.e. interface : destination : gateway
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http://forum.pfsense.org/index.php/topic,12464.msg67635.html#msg67635
The Static Route.png
The gateway is the wan2 gateway
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Cheers Perry.