panic: unknown network protocol number 0 goroutine 849898 [running]: panic(0x1210a60, 0xc003e92090) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc00a3fc918 sp=0xc00a3fc850 pc=0x437c65 gvisor.dev/gvisor/pkg/tcpip/stack.(*PacketBuffer).Network(0xc004c23400, 0xc005cf4b40, 0xed974e1c0) pkg/tcpip/stack/packet_buffer.go:421 +0x1c7 fp=0xc00a3fc970 sp=0xc00a3fc918 pc=0x9e5727 gvisor.dev/gvisor/pkg/tcpip/transport/raw.(*endpoint).HandlePacket.func1(0xc008650dc0, 0xc004c23400, 0xc004c23400) pkg/tcpip/transport/raw/endpoint.go:688 +0x348 fp=0xc00a3fdf78 sp=0xc00a3fc970 pc=0xbb2f68 gvisor.dev/gvisor/pkg/tcpip/transport/raw.(*endpoint).HandlePacket(0xc008650dc0, 0xc004c23400) pkg/tcpip/transport/raw/endpoint.go:818 +0x3f fp=0xc00a3fdfa0 sp=0xc00a3fdf78 pc=0xbafb9f gvisor.dev/gvisor/pkg/tcpip/stack.(*transportDemuxer).deliverRawPacket(0xc0017754b8, 0x1, 0xc004c22f00, 0x8) pkg/tcpip/stack/transport_demuxer.go:771 +0x1a3 fp=0xc00a3fe058 sp=0xc00a3fdfa0 pc=0x9fd143 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverRawPacket(0xc0096fb4a0, 0xc000000001, 0xc004c22f00) pkg/tcpip/stack/nic.go:1123 +0x65 fp=0xc00a3fe090 sp=0xc00a3fe058 pc=0x9e2ae5 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).handleValidatedPacket(0xc009b0f500, 0xc008812d56, 0x14, 0x14, 0xc004c232c0, 0x142962a, 0x2) pkg/tcpip/network/ipv4/ipv4.go:1143 +0xf82 fp=0xc00a3fe858 sp=0xc00a3fe090 pc=0xc03a22 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).HandlePacket(0xc009b0f500, 0xc004c232c0) pkg/tcpip/network/ipv4/ipv4.go:928 +0x1a5 fp=0xc00a3feab8 sp=0xc00a3fe858 pc=0xc02425 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket(0xc0096fb4a0, 0xc004be6b00, 0x6, 0xc004be6b06, 0x6, 0x800, 0xc004c232c0) pkg/tcpip/stack/nic.go:938 +0x3ae fp=0xc00a3feb70 sp=0xc00a3feab8 pc=0x9e1c2e gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).DeliverNetworkPacket(0xc0061f8aa0, 0xc004be6b00, 0x6, 0xc004be6b06, 0x6, 0x800, 0xc004c232c0) pkg/tcpip/link/nested/nested.go:63 +0x104 fp=0xc00a3febd0 sp=0xc00a3feb70 pc=0xcb7804 gvisor.dev/gvisor/pkg/tcpip/link/ethernet.(*Endpoint).DeliverNetworkPacket(0xc0061f8aa0, 0x0, 0x0, 0x0, 0x0, 0x800, 0xc004c232c0) pkg/tcpip/link/ethernet/ethernet.go:82 +0x1bb fp=0xc00a3fec40 sp=0xc00a3febd0 pc=0xf9b89b gvisor.dev/gvisor/pkg/tcpip/link/loopback.(*endpoint).WriteRawPacket(0xc006bd4940, 0xc004c23180, 0x0, 0x0) pkg/tcpip/link/loopback/loopback.go:125 +0x128 fp=0xc00a3fecb0 sp=0xc00a3fec40 pc=0xf9c468 gvisor.dev/gvisor/pkg/tcpip/link/loopback.(*endpoint).WritePackets(0xc006bd4940, 0xc004c23180, 0xc004c23180, 0x0, 0x0, 0xc000000800) pkg/tcpip/link/loopback/loopback.go:91 +0x90 fp=0xc00a3fecf0 sp=0xc00a3fecb0 pc=0xf9c290 gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).WritePackets(...) pkg/tcpip/link/nested/nested.go:120 gvisor.dev/gvisor/pkg/tcpip/link/ethernet.(*Endpoint).WritePackets(0xc0061f8aa0, 0xc004c23180, 0xc004c23180, 0x0, 0xc0081fcd20, 0x14854c8) pkg/tcpip/link/ethernet/ethernet.go:108 +0x10b fp=0xc00a3fed50 sp=0xc00a3fecf0 pc=0xf9baab gvisor.dev/gvisor/pkg/tcpip/stack.(*delegatingQueueingDiscipline).WritePacket(0xc006bd4950, 0xc004c23180, 0x0, 0xc004c23180) pkg/tcpip/stack/nic.go:166 +0x75 fp=0xc00a3feda0 sp=0xc00a3fed50 pc=0x9de235 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).writePacket(0xc0096fb4a0, 0xc004c23180, 0xc004be6a30, 0x4) pkg/tcpip/stack/nic.go:448 +0xbb fp=0xc00a3fede8 sp=0xc00a3feda0 pc=0x9dfafb gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).WritePacket(0xc0096fb4a0, 0xc004bcaaa0, 0xc004c23180, 0x0, 0x0) pkg/tcpip/stack/nic.go:407 +0x229 fp=0xc00a3fef28 sp=0xc00a3fede8 pc=0x9df8a9 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).writePacketPostRouting.func1(0xc004c23180, 0xc008812d06, 0x14) pkg/tcpip/network/ipv4/ipv4.go:592 +0x52 fp=0xc00a3fef60 sp=0xc00a3fef28 pc=0xc09052 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).handleFragments(0xc009b0f500, 0xc004bcaaa0, 0xc00000ffde, 0xc004c22280, 0xc00a3ff0e0, 0x142962a, 0x2, 0x1, 0x0) pkg/tcpip/network/ipv4/ipv4.go:476 +0x15e fp=0xc00a3ff070 sp=0xc00a3fef60 pc=0xbfffbe gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).writePacketPostRouting(0xc009b0f500, 0xc004bcaaa0, 0xc004c22280, 0xc004be6a00, 0x4, 0xc008812d01) pkg/tcpip/network/ipv4/ipv4.go:586 +0x332 fp=0xc00a3ff2b8 sp=0xc00a3ff070 pc=0xc00852 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).writePacket(0xc009b0f500, 0xc004bcaaa0, 0xc004c22280, 0xc004be6a30, 0x4) pkg/tcpip/network/ipv4/ipv4.go:536 +0x205 fp=0xc00a3ff340 sp=0xc00a3ff2b8 pc=0xc00425 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).WritePacket(0xc009b0f500, 0xc004bcaaa0, 0x4000000001, 0xc004c22280, 0x9e48d7, 0x15e9748) pkg/tcpip/network/ipv4/ipv4.go:498 +0x11b fp=0xc00a3ff3b0 sp=0xc00a3ff340 pc=0xc001db gvisor.dev/gvisor/pkg/tcpip/stack.(*Route).WritePacket(0xc004bcaaa0, 0x4000000001, 0xc004c22280, 0xc005b134c0, 0xc004c22280) pkg/tcpip/stack/route.go:572 +0xd7 fp=0xc00a3ff3f0 sp=0xc00a3ff3b0 pc=0x9ec517 gvisor.dev/gvisor/pkg/tcpip/transport/internal/network.(*WriteContext).WritePacket(0xc005b134d8, 0xc004c22280, 0x0, 0x1, 0xffe0) pkg/tcpip/transport/internal/network/endpoint.go:295 +0xd6 fp=0xc00a3ff428 sp=0xc00a3ff3f0 pc=0xba16b6 gvisor.dev/gvisor/pkg/tcpip/transport/raw.(*endpoint).write(0xc008650b00, 0x15dad68, 0xc01c62ef00, 0xc00a3a40e0, 0x0, 0x0, 0x0, 0x0) pkg/tcpip/transport/raw/endpoint.go:392 +0x53b fp=0xc00a3ff5d8 sp=0xc00a3ff428 pc=0xbaeb5b gvisor.dev/gvisor/pkg/tcpip/transport/raw.(*endpoint).Write(0xc008650b00, 0x15dad68, 0xc01c62ef00, 0xc00a3a40e0, 0xc004000000, 0x4, 0x0, 0xa80002) pkg/tcpip/transport/raw/endpoint.go:323 +0xc5 fp=0xc00a3ff628 sp=0xc00a3ff5d8 pc=0xbae2c5 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*socketOpsCommon).SendMsg(0xc008d0bab0, 0xc00a65b500, 0x15f4740, 0xc00a37d000, 0x0, 0x1, 0x20000040, 0xffe0, 0x100, 0xc004be6a20, ...) pkg/sentry/socket/netstack/netstack.go:3915 +0x243 fp=0xc00a3ff788 sp=0xc00a3ff628 pc=0xc4dd63 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.sendSingleMsg(0xc00a65b500, 0x3fbcddb40530, 0xc008d0ba40, 0xc008d0ba40, 0x20001440, 0xc000000040, 0x0, 0xc00a65b501, 0x55934fa8ff68) pkg/sentry/syscalls/linux/vfs2/socket.go:1437 +0x555 fp=0xc00a3ffae8 sp=0xc00a3ff788 pc=0xf75e55 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.SendMMsg(0xc00a65b500, 0x4, 0x20001440, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/socket.go:1329 +0x37f fp=0xc00a3ffbb8 sp=0xc00a3ffae8 pc=0xf7547f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00a65b500, 0x133, 0x4, 0x20001440, 0x1, 0x0, 0x0, 0x0, 0xc000001fa0, 0x1424720, ...) pkg/sentry/kernel/task_syscall.go:115 +0x199 fp=0xc00a3ffc78 sp=0xc00a3ffbb8 pc=0xa83359 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00a65b500, 0x133, 0x4, 0x20001440, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:290 +0x70 fp=0xc00a3ffd00 sp=0xc00a3ffc78 pc=0xa84630 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00a65b500, 0x133, 0x4, 0x20001440, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:237 +0xb4 fp=0xc00a3ffd60 sp=0xc00a3ffd00 pc=0xa84114 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00a65b500, 0x2, 0xc00a65b500) pkg/sentry/kernel/task_syscall.go:204 +0x198 fp=0xc00a3ffe30 sp=0xc00a3ffd60 pc=0xa839f8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc00a65b500, 0x15ccf60, 0x0) pkg/sentry/kernel/task_run.go:294 +0xd9a fp=0xc00a3fff68 sp=0xc00a3ffe30 pc=0xa7691a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00a65b500, 0x49cc) pkg/sentry/kernel/task_run.go:98 +0x1b9 fp=0xc00a3fffd0 sp=0xc00a3fff68 pc=0xa756d9 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc00a3fffd8 sp=0xc00a3fffd0 pc=0x472861 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:398 +0x116