When a process that is listening on a TCP port on Linux crashes or is killed, the kernel will place the port into a TIME_WAIT state for a short duration. This TIME_WAIT state prohibits any other process from opening a socket on that port.
There are a couple of reasons for the kernel to place the port in this state:
1. To prevent delayed segments from the previous connection being accepted into the new connection.
2. To ensure that connections from the client systems have been closed.
TIME_WAIT is implemented for good reason; it is best to wait until the port has cleared before restarting the network license manager. The amount of time needed for the port to clear should be insignificant. It is possible, however, to launch lmgrd in such a way as to ignore the TIME_WAIT state imposed by the kernel. You can launch lmgrd with a –reuseaddr flag which allows the server to explicitly bind to a same port, ignoring the TIME_WAIT state. The syntax for launching lmgrd like this would be:
lmgrd –c /path/to/license/file –l /path/to/log/file –reuseaddr
