n, err = fd.pfd.WriteToInet4(p, sa)
	runtime.KeepAlive(fd)
	return n, wrapSyscallError(writeToSyscallName, err)
}

func (fd *netFD) writeToInet6(p []byte, sa *syscall.SockaddrInet6) (n int, err error) {
	n, err = fd.pfd.WriteToInet6(p, sa)
	runtime.KeepAlive(fd)
	return n, wrapSyscallError(writeToSyscallName, err)
}

			return 0, err
		}
		return c.fd.writeToInet4(b, &sa)
	case syscall.AF_INET6:
		sa, err := ipToSockaddrInet6(addr.IP, addr.Port, addr.Zone)
		if err != nil {
			return 0, err
		}
		return c.fd.writeToInet6(b, &sa)
	default:
		return 0, &AddrError{Err: "invalid address family", Addr: addr.IP.String()}
	}
}

func (c *UDPConn) writeToAddrPort(b []byte, addr netip.AddrPort) (int, error) {
	if c.fd.isConnected {