VMS Help TCPIP Services, Programming Interfaces, Sockets API, bind(), Errors  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    EACCESS            The requested address is protected, and the
                       current user has inadequate permission to
                       access it.
    EADDRINUSE         The specified internet address and ports are
                       already in use.
    EADDRNOTAVAIL      The specified address is not available from
                       the local machine.
    EAFNOSUPPORT       The specified address is invalid for the
                       address family of the specified socket.
    EBADF              The socket descriptor is invalid.
    EDESTADDRREQ       The address argument is a null pointer.
    EFAULT             The name argument is not a valid part of the
                       user address space.
    EINVAL             The socket is already bound to an address and
                       the protocol does not support binding to a new
                       address, the socket has been shut down, or the
                       length or the namelen argument is invalid for
                       the address family.
    EISCONN            The socket is already connected.
    EISDIR             The address argument is a null pointer.
    ENOBUFS            The system has insufficient resources to
                       complete the call.
    ENOTSOCK           The socket descriptor is invalid.
    EOPNOTSUPP         The socket type of the specified socket does
                       not support binding to an address.