package sockopt import ( "net" "syscall" ) func UDPReuseaddr(c *net.UDPConn) (err error) { rc, err := c.SyscallConn() if err != nil { return } rc.Control(func(fd uintptr) { err = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1) }) return }