The ip-link check enable command enables the IP-link function.
The undo ip-link check enable command disables the IP-link function.
By default, the IP-link function is disabled.
If the ip-link check enable command is not run, the configuration commands related to the IP-link function, such as the ip-link name, can be run but do not take effect. In this case, the IP-link state in the display ip-link command output is always init.