Local FQDN resolution when using DynDNS in DHCP Settings

  • Hello,

    I'm trying to resolve an internal dns resolution issue.  The issue is that when I populate the DNS inside the DHCP settings of a configured vlan, internal FQDN's are being resolved by the DNS set in the DHCP settings.

    I have my pfsense box's hostname and domain set in System: General Setup

    Hostname:  prfw1
    Domain (protecting my real domain name):    somedomain.com

    When I receive my vlan specific DHCP address, the dns suffix is set to: somedomain.com

    Not using specific DNS in the DHCP settings, I'm able to resolve internal hostnames/ip addresses, however when I set the DNS to a specific DNS provider (ie. google, opendns, dyndns) I'm unable to lookup those internal FQDNs.

    I have Enable DNS forwarder on, along with Register DHCP static mappings in DNS forwarder and Resolve DHCP mappings first.  This is on "All" interfaces.  I have my internal hosts defined in the "Host Overrides" set.

    I'm sure this is common, but just not sure what I'm missing to resolve the internals.

    Thank you.

  • LAYER 8 Global Moderator

    who is unable to resolve your internals?  pfsense or clients - if you tell your clients to use opendns for example - how would opendns know about your internal something.somedomain.com ?

    You should have pfsense set to ask itself - the dns forwarder at and google and opendns if you want it to resolve local names.

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