583  * call to bind() will suffice. The other socket is closed in this case.

   583  * call to bind() will suffice. The other socket is closed in this case.

   584  *

   584  *

   585  * The more complicated case is when the requested address is ::0 or 0.0.0.0.

   585  * The more complicated case is when the requested address is ::0 or 0.0.0.0.

   586  *

   586  *

   587  * Two further cases:

   587  * Two further cases:

   589  *    first with a wild-card port argument. We then try to bind in v6 space

   589  *    first with a wild-card port argument. We then try to bind in v6 space

   590  *    using the returned port number. If this fails, we repeat the process

   590  *    using the returned port number. If this fails, we repeat the process

   591  *    until a free port common to both spaces becomes available.

   591  *    until a free port common to both spaces becomes available.

   592  *

   592  *

   593  * 3. If the requested port is a specific port, then we just try to get that

   593  * 3. If the requested port is a specific port, then we just try to get that