}
	return addrs, nil
}

// ipv4only reports whether addr is an IPv4 address.
func ipv4only(addr IPAddr) bool {
	return addr.IP.To4() != nil
}

// ipv6only reports whether addr is an IPv6 address except IPv4-mapped IPv6 address.
func ipv6only(addr IPAddr) bool {
	return len(addr.IP) == IPv6len && addr.IP.To4() == nil
}

	case "aix", "windows", "openbsd", "js", "wasip1":
		if mode == "dial" && raddr.isWildcard() {
			raddr = raddr.toLocal(net)
		}
	}
	family, ipv6only := favoriteAddrFamily(net, laddr, raddr, mode)
	return socket(ctx, net, family, sotype, proto, ipv6only, laddr, raddr, ctrlCtxFn)
}

func ipToSockaddrInet4(ip IP, port int) (syscall.SockaddrInet4, error) {
	if len(ip) == 0 {
		ip = IPv4zero
	}

var triggerTimeString = triggerTime.Format(time.RFC3339Nano)
var oldTriggerTimeString = triggerTime.Add(-time.Hour).Format(time.RFC3339Nano)

var ipv4only = []v1.IPFamily{v1.IPv4Protocol}
var ipv6only = []v1.IPFamily{v1.IPv6Protocol}
var ipv4ipv6 = []v1.IPFamily{v1.IPv4Protocol, v1.IPv6Protocol}
var ipv6ipv4 = []v1.IPFamily{v1.IPv6Protocol, v1.IPv4Protocol}

		address: sa.String(),
	}
}

// socket returns a network file descriptor that is ready for
// I/O using the fake network.
func socket(ctx context.Context, net string, family, sotype, proto int, ipv6only bool, laddr, raddr sockaddr, ctrlCtxFn func(context.Context, string, string, syscall.RawConn) error) (*netFD, error) {
	if raddr != nil && ctrlCtxFn != nil {
		return nil, os.NewSyscallError("socket", syscall.ENOTSUP)
	}