ping: Fix read ICMPv6 from gVisor

Author: nekohasekai

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/go-ole/go-ole v1.3.0
 	github.com/google/btree v1.1.3
 	github.com/sagernet/fswatch v0.1.1
-	github.com/sagernet/gvisor v0.0.0-20250822052253-5558536cf237
+	github.com/sagernet/gvisor v0.0.0-20250909151924-850a370d8506
 	github.com/sagernet/netlink v0.0.0-20240612041022-b9a21c07ac6a
 	github.com/sagernet/nftables v0.3.0-beta.4
 	github.com/sagernet/sing v0.7.6-0.20250825141840-811aa328e57b

go.sum

@@ -18,8 +18,8 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sagernet/fswatch v0.1.1 h1:YqID+93B7VRfqIH3PArW/XpJv5H4OLEVWDfProGoRQs=
 github.com/sagernet/fswatch v0.1.1/go.mod h1:nz85laH0mkQqJfaOrqPpkwtU1znMFNVTpT/5oRsVz/o=
-github.com/sagernet/gvisor v0.0.0-20250822052253-5558536cf237 h1:SUPFNB+vSP4RBPrSEgNII+HkfqC8hKMpYLodom4o4EU=
-github.com/sagernet/gvisor v0.0.0-20250822052253-5558536cf237/go.mod h1:QkkPEJLw59/tfxgapHta14UL5qMUah5NXhO0Kw2Kan4=
+github.com/sagernet/gvisor v0.0.0-20250909151924-850a370d8506 h1:x/t3XqWshOlWqRuumpvbUvjtEr/6mJuBXAVovPefbUg=
+github.com/sagernet/gvisor v0.0.0-20250909151924-850a370d8506/go.mod h1:QkkPEJLw59/tfxgapHta14UL5qMUah5NXhO0Kw2Kan4=
 github.com/sagernet/netlink v0.0.0-20240612041022-b9a21c07ac6a h1:ObwtHN2VpqE0ZNjr6sGeT00J8uU7JF4cNUdb44/Duis=
 github.com/sagernet/netlink v0.0.0-20240612041022-b9a21c07ac6a/go.mod h1:xLnfdiJbSp8rNqYEdIW/6eDO4mVoogml14Bh2hSiFpM=
 github.com/sagernet/nftables v0.3.0-beta.4 h1:kbULlAwAC3jvdGAC1P5Fa3GSxVwQJibNenDW2zaXr8I=

stack_gvisor_icmp.go

@@ -226,6 +226,7 @@ func (w *ICMPBackWriter) WritePacket(p []byte) error {
 		packet := stack.NewPacketBuffer(stack.PacketBufferOptions{
 			Payload: buffer.MakeWithData(p),
 		})
+		parse.IPv6(packet)
 		defer packet.DecRef()
 		err = route.WritePacketDirect(packet)
 		if err != nil {