diff --git a/ipv4/multicast_test.go b/ipv4/multicast_test.go
index 09463bff06..fd086580d7 100644
--- a/ipv4/multicast_test.go
+++ b/ipv4/multicast_test.go
@@ -30,7 +30,7 @@ var packetConnReadWriteMulticastUDPTests = []struct {
 
 func TestPacketConnReadWriteMulticastUDP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "illumos", "js", "nacl", "plan9", "solaris", "windows", "zos":
+	case "fuchsia", "hurd", "illumos", "js", "nacl", "plan9", "solaris", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	ifi, err := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagMulticast|net.FlagLoopback)
@@ -132,7 +132,7 @@ var packetConnReadWriteMulticastICMPTests = []struct {
 
 func TestPacketConnReadWriteMulticastICMP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "illumos", "js", "nacl", "plan9", "solaris", "windows":
+	case "fuchsia", "hurd", "illumos", "js", "nacl", "plan9", "solaris", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsRawSocket() {
@@ -262,7 +262,7 @@ var rawConnReadWriteMulticastICMPTests = []struct {
 
 func TestRawConnReadWriteMulticastICMP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "illumos", "js", "nacl", "plan9", "solaris", "windows":
+	case "fuchsia", "hurd", "illumos", "js", "nacl", "plan9", "solaris", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if testing.Short() {
diff --git a/ipv4/multicastlistener_test.go b/ipv4/multicastlistener_test.go
index 77bad6676c..0035c26f6a 100644
--- a/ipv4/multicastlistener_test.go
+++ b/ipv4/multicastlistener_test.go
@@ -21,7 +21,7 @@ var udpMultipleGroupListenerTests = []net.Addr{
 
 func TestUDPSinglePacketConnWithMultipleGroupListeners(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if testing.Short() {
@@ -61,7 +61,7 @@ func TestUDPSinglePacketConnWithMultipleGroupListeners(t *testing.T) {
 
 func TestUDPMultiplePacketConnWithMultipleGroupListeners(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if testing.Short() {
@@ -116,7 +116,7 @@ func TestUDPMultiplePacketConnWithMultipleGroupListeners(t *testing.T) {
 
 func TestUDPPerInterfaceSinglePacketConnWithSingleGroupListener(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if testing.Short() {
@@ -172,7 +172,7 @@ func TestUDPPerInterfaceSinglePacketConnWithSingleGroupListener(t *testing.T) {
 
 func TestIPSingleRawConnWithSingleGroupListener(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if testing.Short() {
@@ -217,7 +217,7 @@ func TestIPSingleRawConnWithSingleGroupListener(t *testing.T) {
 
 func TestIPPerInterfaceSingleRawConnWithSingleGroupListener(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if testing.Short() {
diff --git a/ipv4/multicastsockopt_test.go b/ipv4/multicastsockopt_test.go
index b0ddd0716c..9339e8901a 100644
--- a/ipv4/multicastsockopt_test.go
+++ b/ipv4/multicastsockopt_test.go
@@ -26,7 +26,7 @@ var packetConnMulticastSocketOptionTests = []struct {
 
 func TestPacketConnMulticastSocketOptions(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	ifi, err := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagMulticast|net.FlagLoopback)
@@ -66,7 +66,7 @@ var rawConnMulticastSocketOptionTests = []struct {
 
 func TestRawConnMulticastSocketOptions(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsRawSocket() {
diff --git a/ipv4/readwrite_test.go b/ipv4/readwrite_test.go
index 27aaa7bcc4..28bd22d45c 100644
--- a/ipv4/readwrite_test.go
+++ b/ipv4/readwrite_test.go
@@ -21,7 +21,7 @@ import (
 
 func BenchmarkReadWriteUnicast(b *testing.B) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		b.Skipf("not supported on %s", runtime.GOOS)
 	}
 
@@ -69,7 +69,7 @@ func BenchmarkReadWriteUnicast(b *testing.B) {
 
 func BenchmarkPacketConnReadWriteUnicast(b *testing.B) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		b.Skipf("not supported on %s", runtime.GOOS)
 	}
 
@@ -220,7 +220,7 @@ func BenchmarkPacketConnReadWriteUnicast(b *testing.B) {
 
 func TestPacketConnConcurrentReadWriteUnicastUDP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 
@@ -324,7 +324,7 @@ func TestPacketConnConcurrentReadWriteUnicastUDP(t *testing.T) {
 
 func TestPacketConnConcurrentReadWriteUnicast(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 
diff --git a/ipv4/unicast_test.go b/ipv4/unicast_test.go
index 12bbdb41f4..879f2fc058 100644
--- a/ipv4/unicast_test.go
+++ b/ipv4/unicast_test.go
@@ -20,7 +20,7 @@ import (
 
 func TestPacketConnReadWriteUnicastUDP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	// Skip this check on z/OS since net.Interfaces() does not return loopback, however
@@ -85,7 +85,7 @@ func TestPacketConnReadWriteUnicastUDP(t *testing.T) {
 
 func TestPacketConnReadWriteUnicastICMP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsRawSocket() {
@@ -180,7 +180,7 @@ func TestPacketConnReadWriteUnicastICMP(t *testing.T) {
 
 func TestRawConnReadWriteUnicastICMP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsRawSocket() {
diff --git a/ipv4/unicastsockopt_test.go b/ipv4/unicastsockopt_test.go
index 58d653eac4..0cd403da2f 100644
--- a/ipv4/unicastsockopt_test.go
+++ b/ipv4/unicastsockopt_test.go
@@ -16,7 +16,7 @@ import (
 
 func TestConnUnicastSocketOptions(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if _, err := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagLoopback); err != nil {
@@ -61,7 +61,7 @@ var packetConnUnicastSocketOptionTests = []struct {
 
 func TestPacketConnUnicastSocketOptions(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if _, err := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagLoopback); err != nil {
@@ -86,7 +86,7 @@ func TestPacketConnUnicastSocketOptions(t *testing.T) {
 
 func TestRawConnUnicastSocketOptions(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsRawSocket() {
diff --git a/ipv6/icmp_test.go b/ipv6/icmp_test.go
index 3652067d83..3fe9ef4fd0 100644
--- a/ipv6/icmp_test.go
+++ b/ipv6/icmp_test.go
@@ -34,7 +34,7 @@ func TestICMPString(t *testing.T) {
 
 func TestICMPFilter(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 
@@ -61,7 +61,7 @@ func TestICMPFilter(t *testing.T) {
 
 func TestSetICMPFilter(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
diff --git a/ipv6/multicast_test.go b/ipv6/multicast_test.go
index 267098a100..0cd1ac4e39 100644
--- a/ipv6/multicast_test.go
+++ b/ipv6/multicast_test.go
@@ -29,7 +29,7 @@ var packetConnReadWriteMulticastUDPTests = []struct {
 
 func TestPacketConnReadWriteMulticastUDP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
@@ -144,7 +144,7 @@ func TestPacketConnReadWriteMulticastICMP(t *testing.T) {
 			`and needs investigation, see golang.org/issue/42064`)
 	}
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
diff --git a/ipv6/multicastlistener_test.go b/ipv6/multicastlistener_test.go
index a4dc86342e..386b38791a 100644
--- a/ipv6/multicastlistener_test.go
+++ b/ipv6/multicastlistener_test.go
@@ -21,7 +21,7 @@ var udpMultipleGroupListenerTests = []net.Addr{
 
 func TestUDPSinglePacketConnWithMultipleGroupListeners(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
@@ -61,7 +61,7 @@ func TestUDPSinglePacketConnWithMultipleGroupListeners(t *testing.T) {
 
 func TestUDPMultiplePacketConnWithMultipleGroupListeners(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
@@ -116,7 +116,7 @@ func TestUDPMultiplePacketConnWithMultipleGroupListeners(t *testing.T) {
 
 func TestUDPPerInterfaceSinglePacketConnWithSingleGroupListener(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
@@ -172,7 +172,7 @@ func TestUDPPerInterfaceSinglePacketConnWithSingleGroupListener(t *testing.T) {
 
 func TestIPSinglePacketConnWithSingleGroupListener(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
@@ -216,7 +216,7 @@ func TestIPPerInterfaceSinglePacketConnWithSingleGroupListener(t *testing.T) {
 	switch runtime.GOOS {
 	case "darwin", "ios", "dragonfly", "openbsd": // platforms that return fe80::1%lo0: bind: can't assign requested address
 		t.Skipf("not supported on %s", runtime.GOOS)
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
diff --git a/ipv6/multicastsockopt_test.go b/ipv6/multicastsockopt_test.go
index d598d08d07..9d4de24c2a 100644
--- a/ipv6/multicastsockopt_test.go
+++ b/ipv6/multicastsockopt_test.go
@@ -26,7 +26,7 @@ var packetConnMulticastSocketOptionTests = []struct {
 
 func TestPacketConnMulticastSocketOptions(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
diff --git a/ipv6/readwrite_test.go b/ipv6/readwrite_test.go
index 131b1904c5..51c1b8bc4b 100644
--- a/ipv6/readwrite_test.go
+++ b/ipv6/readwrite_test.go
@@ -21,7 +21,7 @@ import (
 
 func BenchmarkReadWriteUnicast(b *testing.B) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		b.Skipf("not supported on %s", runtime.GOOS)
 	}
 
@@ -72,7 +72,7 @@ func BenchmarkReadWriteUnicast(b *testing.B) {
 
 func BenchmarkPacketConnReadWriteUnicast(b *testing.B) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		b.Skipf("not supported on %s", runtime.GOOS)
 	}
 
@@ -220,7 +220,7 @@ func BenchmarkPacketConnReadWriteUnicast(b *testing.B) {
 
 func TestPacketConnConcurrentReadWriteUnicastUDP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	ifi, err := nettest.RoutedInterface("ip6", net.FlagUp|net.FlagLoopback)
@@ -327,7 +327,7 @@ func TestPacketConnConcurrentReadWriteUnicastUDP(t *testing.T) {
 
 func TestPacketConnConcurrentReadWriteUnicast(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 
diff --git a/ipv6/sockopt_test.go b/ipv6/sockopt_test.go
index ab0d2e4e51..ad6cb46d25 100644
--- a/ipv6/sockopt_test.go
+++ b/ipv6/sockopt_test.go
@@ -17,7 +17,7 @@ import (
 
 func TestConnInitiatorPathMTU(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "wasip1", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 
@@ -51,7 +51,7 @@ func TestConnInitiatorPathMTU(t *testing.T) {
 
 func TestConnResponderPathMTU(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "wasip1", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if _, err := nettest.RoutedInterface("ip6", net.FlagUp|net.FlagLoopback); err != nil {
@@ -84,7 +84,7 @@ func TestConnResponderPathMTU(t *testing.T) {
 
 func TestPacketConnChecksum(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
diff --git a/ipv6/unicast_test.go b/ipv6/unicast_test.go
index e03c2cd336..d5ec85eab4 100644
--- a/ipv6/unicast_test.go
+++ b/ipv6/unicast_test.go
@@ -20,7 +20,7 @@ import (
 
 func TestPacketConnReadWriteUnicastUDP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if _, err := nettest.RoutedInterface("ip6", net.FlagUp|net.FlagLoopback); err != nil {
@@ -91,7 +91,7 @@ func TestPacketConnReadWriteUnicastUDP(t *testing.T) {
 
 func TestPacketConnReadWriteUnicastICMP(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows", "zos":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if !nettest.SupportsIPv6() {
diff --git a/ipv6/unicastsockopt_test.go b/ipv6/unicastsockopt_test.go
index c3abe2d14d..bb477ea6a8 100644
--- a/ipv6/unicastsockopt_test.go
+++ b/ipv6/unicastsockopt_test.go
@@ -16,7 +16,7 @@ import (
 
 func TestConnUnicastSocketOptions(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if _, err := nettest.RoutedInterface("ip6", net.FlagUp|net.FlagLoopback); err != nil {
@@ -61,7 +61,7 @@ var packetConnUnicastSocketOptionTests = []struct {
 
 func TestPacketConnUnicastSocketOptions(t *testing.T) {
 	switch runtime.GOOS {
-	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
+	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
 		t.Skipf("not supported on %s", runtime.GOOS)
 	}
 	if _, err := nettest.RoutedInterface("ip6", net.FlagUp|net.FlagLoopback); err != nil {
diff --git a/nettest/nettest.go b/nettest/nettest.go
index 1e350f09cb..3656c3c54b 100644
--- a/nettest/nettest.go
+++ b/nettest/nettest.go
@@ -103,12 +103,12 @@ func TestableNetwork(network string) bool {
 		// This is an internal network name for testing on the
 		// package net of the standard library.
 		switch runtime.GOOS {
-		case "android", "fuchsia", "hurd", "ios", "js", "nacl", "plan9", "windows":
+		case "android", "fuchsia", "hurd", "ios", "js", "nacl", "plan9", "wasip1", "windows":
 			return false
 		}
 	case "ip", "ip4", "ip6":
 		switch runtime.GOOS {
-		case "fuchsia", "hurd", "js", "nacl", "plan9":
+		case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1":
 			return false
 		default:
 			if os.Getuid() != 0 {
@@ -117,14 +117,14 @@ func TestableNetwork(network string) bool {
 		}
 	case "unix", "unixgram":
 		switch runtime.GOOS {
-		case "android", "fuchsia", "hurd", "ios", "js", "nacl", "plan9", "windows":
+		case "android", "fuchsia", "hurd", "ios", "js", "nacl", "plan9", "wasip1", "windows":
 			return false
 		case "aix":
 			return unixStrmDgramEnabled()
 		}
 	case "unixpacket":
 		switch runtime.GOOS {
-		case "aix", "android", "fuchsia", "hurd", "darwin", "ios", "js", "nacl", "plan9", "windows", "zos":
+		case "aix", "android", "fuchsia", "hurd", "darwin", "ios", "js", "nacl", "plan9", "wasip1", "windows", "zos":
 			return false
 		}
 	}