vista, dns woes ?

James Clark Calloway callowayj at
Tue Jun 5 18:17:49 UTC 2007

At first we assumed that VISTA was holding on
to DNS servers or some such .. but it seems
that with the DHCPINFORM the server gives out
the wrong set.

On Tue, 5 Jun 2007, James Clark Calloway wrote:

> Hi Folks,
> Has anyone had any problem regarding VISTA and DNS servers ? Our dhcp
> configuration is set up so that unregistered (unknown) clients get dns
> servers that resolve only to our registration system. We've done it this
> way for years with few problems.
> VISTA sometimes throws in a DHCPINFORM after already getting the correct
> DNS servers from DHCP. This seems to confuse DHCP into giving it the good
> "known" dns servers.
> I had  one of our network guys do a trace and it seems to follow:
>         Client -- DHCPDISCOVER
>         Server -- DHCPOFFER    (offers the proper DNS server)
>         Client -- DHCPREQUEST  (requests the proper DNS server)
>         Server -- DHCPACK (gives the client the proper DNS server)
> so far so good ... but then:
>         Client -- DHCPINFORM
>         Server -- DHCPACK (gives the client the improper DNS server)
> I can cull more specific info together .. I was just wondering if anyone
> else was experiencing this. We're running 3.0.5.

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