Dhcp lease not updating dns Swingers sa

by  |  29-Oct-2019 13:17

This is on the same subnet but a different IP range.

Now the problem comes when I also enable DHCP on the router so that clients can get an Internet connection when the Server is down.

restarting the DNS (plus RELOAD the entry) and DHCP services doesn't help at all and also entering the DHCP assigned IP address into the DNS server caused more problem since the address is assigned to different host already by DHCP but not gets updated in the DNS server (only to non-windows machine).

Microsoft Dynamic DNS (DDNS) is a wonderful feature.

Combined with Active Directory (AD) it makes managing thousands of DNS records for clients and servers a breeze.

The way to get around this is you can configure DHCP’s Option 081 to update the record for all client, no matter if the client asks or not. If DHCP is on a Windows 2008 R2 DC, to protect the DC when using the Dns Update Proxy group, you must secure the group by running: dnscmd /config /Open Acl On Proxy Updates 0 Using “DHCP Name Protection.” will register A and PTR record on behalf of a client, and will prevent a workstation (non-Windows) Name Squatting, meaning using a name that another machine (non-Windows or Windows) client that DHCP already registered , from registering it’s name.

To configure DHCP Option 081, you must look at the DHCP server properties, under the DNS Tab in DHCP properties. After configuring the above provedure, the credentials and Dns Update Proxy group configuratuion will not update current or delete duplicate records. DHCP will give that duplicate named client an IP, but it will not register it into DNS.

Perform a packet capture (wireshark) on the client or the server (easier on the client, less packets) to verify this hypothesis.

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