pub fn open_ipv4(
addr: SocketAddrV4,
timestamping: GeneralTimestampMode,
reuse_addr: bool,
) -> Result<Socket<SocketAddrV4, Open>>pub fn open_ipv4(
addr: SocketAddrV4,
timestamping: GeneralTimestampMode,
reuse_addr: bool,
) -> Result<Socket<SocketAddrV4, Open>>