This boolean option specifies whether a reuse of a local address is allowed when another socket has not yet been removed by the operating system.

For connection-oriented sockets, if this option is disabled and if there is another socket in state TIME_WAIT on a given address then another socket binding to that address would fail. Setting this value after a socket is bound has no effect.

For datagram sockets this option determines whether several sockets can listen on the same address; when enabled each socket will receive a copy of the datagram.

See for more information about socket re-use.

[Android Documentation]