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Conditional forvarder DNS issue

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Hi, our windows 2008 r2 server (domain controller and DNS) has a conditional forvarder to certain dns zone .Eventually its responsable for name rosolution. And everything is fine until i try resolve an aliac.

so what exaclty happends ,ley me describe:

our domain contoso.com and we have this zone and responsible for it, also it keeps a  conditional forvarder for zone "example.zone"

aaand that DNS server (responsible for example.zone) has an alias record  to the another zone "another.zone".

so , i try resolve host.example.zone , query transfered through forvarder to example.zone DNS server ,which returns full information about host in UDP packet to forvarder

-alias FQDN

-host FQDN

and than forvarder cut 1\2 DNS information from packet and returnes to DNS client only

-alias FQDN without any HOST\ip information!

how i can fix this? doesn't seem like primary DNS has any settings about it.

i dumped all traffic,- and i see how total IP length cuts from 139 to 112(in responce packet) , but cant do anything with it =<



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