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Philippe Eveleigh
Philippe Eveleigh
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Multiwan peer dns failure

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I am attempting to configure two external wan connections one is pppoe public static ip and the other is cable public dynamic ip.

I have to turn off the auto resolv dns on the external cable configuration for the gateway to work properly.

This problem has had me test multiple multiwan permutations and for now the above combination is the only one that is giving me difficulty. I also recall seeing in the past some issues with this combination and found posts that eludes to the problem that might be similar to mine but not certain if they are?

Any suggestions would be appreciated
In Multiwan
Friday, September 26 2014, 05:51 PM
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  • Accepted Answer

    Philippe Eveleigh
    Philippe Eveleigh
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    Friday, September 26 2014, 07:02 PM - #Permalink
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    Hello Nick, I would concur with your statement but forgot to mention that the gateway also stops resolving if it does not connect to the cable? I am waiting for the provider to install the cable wan setup at that location, in anticipation I was configuring the gateway yesterday and ran into this problem.

    I also have tested a pppoe dynamic configuration but not static. I was able to test multiple combination with a pppoe dynamic ip's configuration, but did not encounter the above problem. Note: I am also aware of the multiple ISP issues but in this case all the connections are from the same ISP but thanks for the heads-up.
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  • Accepted Answer

    Nick Howitt
    Nick Howitt
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    Friday, September 26 2014, 06:29 PM - #Permalink
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    ISP's often block access to their DNS servers from external networks. With MultiWAN, if, fo example, you configure ClearOS to use ISP1's DNS servers, ClearOS may put put the DNS query to ISP1's server down the ISP2 interface which then fails. The way round this is to configure manual public DNS servers such as OpenDNS (208.67.222.222 and 208.67.220.220) or GoogleDNS (8.8.8.8 and 8.8.4.4). These are not the only two providers, just examples.
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