HostA records incorrect

[elo]

Hello,
I've run into a problem with an AD integrated forward lookup zone on
a DNS server. This server has 2 adapters and a modem. It is set up to
be a primary server. Normally we will see two HostA records in the
zone for the DNS server, each one corresponding to one of the adapters.
When the modem is dialed out, a new HostA record is added for the DHCP
ip address from the dial up connection.
On a few occassions, it seems that the HostA records for the network
adapters are deleted, and the only HostA record remaining is the one
for the modem connection. This seems to be a problem for about 30-60
minutes, after which the records for the network adapters are re-added
automatically. This a problem for us as some client machines are
updating their DNS cache during this interval, and incorrectly resolve
the hostname for this DNS server(the DNS server hostname resolves to
the modem DHCP address, which the client machines cannot contact).
What could cause the DNS server to drop two valid HostA records for
itself? The network adapters appear to be healthy when the records are
deleted. Could our DNS server be requesting a zone transfer from the
dial up connections's DNS server? I've been reading up on zone
transfers, and I don't see why this would occurr... Let me know if you
need further explanation, I'm new to DNS and Active Directory and may
missed something here or there. Thanks for any help!

 

[Kevin D. Goodknecht Sr. [MVP]]

Hello,
I've run into a problem with an AD integrated forward lookup zone on
a DNS server. This server has 2 adapters and a modem. It is set up
to be a primary server. Normally we will see two HostA records in the
zone for the DNS server, each one corresponding to one of the
adapters. When the modem is dialed out, a new HostA record is added
for the DHCP ip address from the dial up connection.
On a few occassions, it seems that the HostA records for the network
adapters are deleted, and the only HostA record remaining is the one
for the modem connection. This seems to be a problem for about 30-60
minutes, after which the records for the network adapters are re-added
automatically. This a problem for us as some client machines are
updating their DNS cache during this interval, and incorrectly resolve
the hostname for this DNS server(the DNS server hostname resolves to
the modem DHCP address, which the client machines cannot contact).
What could cause the DNS server to drop two valid HostA records for
itself? The network adapters appear to be healthy when the records
are deleted. Could our DNS server be requesting a zone transfer from
the dial up connections's DNS server? I've been reading up on zone
transfers, and I don't see why this would occurr... Let me know if you
need further explanation, I'm new to DNS and Active Directory and may
missed something here or there. Thanks for any help!

In the DNS management console, DNS server property sheet, interfaces tab,
select the IP address you want the records created for.

If you need DNS to listen on all IP addresses, add this to the registry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\Parameters

On the Edit menu, point to New, and then click String Value to add the
following registry value:

Value name: PublishAddresses
Data type: REG_SZ
Value data: IP address of the server's local network adapter.