I keep loosing DNS servers

Discussion in 'Tomato Firmware' started by pitabread55, Dec 21, 2008.

  1. pitabread55

    pitabread55 Addicted to LI Member

    Hello All,

    Asus WL-520gU
    Tomato 1.23 with USB mod
    I have a static IP address with static DNS servers.

    In Advanced / DHCP / DNS Servers I have "Use Received DNS with Static DNS" check (and nothing else). All works good for a few hours then my PC's revert back to for the DNS server and everything goes "bork". As soon as I refresh the DHCP lease on the PC the name servers go back to the way that they should.

    What am I doing wrong?
  2. ntest7

    ntest7 Network Guru Member

    The "Use Received DNS with Static DNS" tells the router to use the ISP's DNS servers along with the static DNS servers you set. It doesn't change the DNS servers sent to the DHCP clients. Sounds as if you don't what that box checked.

    The top box, "Use Internal Caching DNS Forwarder" controls whether DHCP issues the router IP or the literal static DNS IPs to your DHCP clients. While generally it's best to leave this box checked to use the DNS cache in the router, sounds as if you want that box unchecked.

    If I've misunderstood, please explain what results you expect, rather than what doesn't work.
  3. pitabread55

    pitabread55 Addicted to LI Member

    I'm on a static IP (business class cable) so I have to plug in my IP/route/netmask & dns servers into the router. The easiest thing (the way it worked on my WRT54G) is to just let the DHCP clients pick up an IP address and the hard-coded DNS servers from the router.

    I don't really care what I do as long as it works.
  4. ntest7

    ntest7 Network Guru Member

    Sounds as if just unchecking "Use Received DNS With Static DNS" should work for you.
    If that doesn't do what you want, also uncheck the "Use Internal Caching DNS Forwarder"
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