Set IP address to match the VIP on the load balancerĭisable 'Automatic Metric' and manually set to 254 on the IP Settings tab.ĭisable the 'Register this connection's address in DNS' option on the DNS tab What can we do to stop the loopback adapters from getting registered in the DNS?ġ.Make sure you add 'Microsoft KM-TEST Loopback Adapter' via device manager.Ģ.Uncheck everything except Internet Protocol Version 4 (TCP/IPv4):ĭisable 'File and Printer Sharing for Microsoft Networks'ĭisable 'Internet Protocol Version 6 (TCP/IPv6)'Ĭonfigure 'Internet Protocol Version 4 (TCP/IPv4)'ģ.Open up the TCP/IP v4 properties of that NIC: However, the adapters still getting registered when we check after some time.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DisableDynamicUpdate=1 We have set this registry key on all IIS machines loopback adapters: Netbios was disabled on the loopback adapters. The Interface metric was set to 254 on the loopback adapter. We have changed the loopback adapter to not be the first on the list in advanced settings.
The loopback adapters are set with empty DNS settings and on 255.255.255.255 subnet. We would like to disable the loopback adapters from registering in the DNS and already tried the following:Ĭhanged the DNS records from dynamic to static at the DNS zone (hosted in Active-Directory).ĭisabled “Register this connection’s address in DNS” checkbox on the loopback adapters. netsh interface ipv4 set interface "loopback" weakhostsend=enabledĪfter that, we have noticed that the loopback adapters sometimes get getting registered in the DNS as the servers,Īnd so each machine could have two records in the DNS ,one with its real IP and another with the VIP IP. netsh interface ipv4 set interface "loopback" weakhostreceive=enabled netsh interface ipv4 set interface "lan" weakhostreceive=enabled The loopback adapter hold the Load-Balancer VIP IP, so they could listen on it and return replies – all this is working well.Īs part of setting the DSR (I’m adding this part as it could be related) we had to set the following commands: We have set DSR (Direct server return) and we added loopback adapter for each IIS machine,
#Microsoft loopback adapters series#
We have a series of windows 2012 IIS machines in domain-environment behind Load-Balancer (F5 BIG-IP),
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