WRT100 Router DNS Order (DHCP)

Discussion in 'Cisco/Linksys Wireless Routers' started by alandc, Apr 29, 2008.

  1. alandc

    alandc Guest

    I have diagnosed a problem with the WRT100 router which I had hoped would be fixed with a firmware update but was not with the most current (v1.0.02). I have asked Linksys to troubleshoot the issue and they have passed it to software engineering at my request but it could be weeks or months and nothing may come of it so I'm posting this to linksys forums so others can confirm my findings with their equipment and confirm that it is really a bug!

    If you have your DHCP server enabled in the router (most do) and receive DNS settings from your ISP on this router they will always sort to the top followed by the router itself. If you specify Static DNS entries they will sort to the bottom. This is just the opposite of what most routers do (including all the other Linksys models I've used).

    The result is sorted... ISP, ROUTER, STATIC. If you as an administrator specify a static DNS (say for use with an active directory domain controller or to use OpenDNS) the intention is that it be used first. For this to happen it must appear first on the list (DHCP) .. not last.

    To work properly we need this order to the DNS entires... STATIC, ROUTER, ISP. Static (manual) entries should always proceed any automatic setup items.

    Do you have a WRT100? What order does yours sort the DNS entries for your DHCP client requests?
  2. HennieM

    HennieM Network Guru Member

    Don't understand what you mean alandc?? Specifically, what do you mean with the word "sort"?
  3. davexnet

    davexnet LI Guru Member

    Secondly, what tool are you using to confirm the order ?
  4. samsks

    samsks Guest

    alandc, I too am experiencing this same problem. All other linksys routers will hand out an IP address via DHCP and provide DNS servers so that the StaticDNS1, 2, 3 that we provide in the DHCP settings are used first.

    But the WRT100 does it in reverse order, which means that our users will never use the preferred DNS servers that we want them to use.

    Daveexnet, you can see the DNS servers that your computer will use simply by issuing ipconfig /all.

    With all other Linksys products, when you provide Static DNS servers, they will be shown at the TOP of the list. But the WRT100 puts them at the bottom, which effectively means that they will not be used.

    Linksys, please fix this in a future firmware upgrade 1.0.02 does not fix this!
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