Using the RPC_UNSUPPORTED_NETADDRS and RPC_UNSUPPORTED_NETIFS environment variables

Problem(Abstract)

You can set the RPC_UNSUPPORTED_NETADDRS environment variable to exclude specific IP addresses on the system which are not required to be registered with SARPC daemon service. This environment variable can be used to initialize multiple IP addresses to exclude, each separated by a colon (:).

For example, if you want to exclude two IP address, 9.3.240.1 and 9.3.240.66 from registering with SARPCD processes, the environment variable needs to be set as:

RPC_UNSUPPORTED_NETADDRS=9.3.240.1:9.3.240.66

The RPC_UNSUPPORTED_NETIFS environment variable can be set to exclude specific network interfaces on systems that are not required to be registered with SARPC daemon service.

For example, if you need to exclude two network interfaces from SARPCD processes, the environment variable needs to be set as:

RPC_UNSUPPORTED_NETIFS= "le0:le1"

The mentioned variables accomplish the same task.

You need to set only one of these environment variables to exclude IP address from SARPC endpoint database. The SARPCD reads these environment variables from the current shell during its startup. You can set these variables in the /etc/environment file to avoid setting the same during restart of SARPCD.

You can query the endpoint database to confirm whether the specified IP is excluded by using sarpccp show mapping command explained in link > http://www-01.ibm.com/support/docview.wss?uid=swg21611093