panic: unknown network protocol number 0 goroutine 510575 [running]: panic(0x1211a60, 0xc00725d600) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc005ccc8f8 sp=0xc005ccc830 pc=0x437c65 gvisor.dev/gvisor/pkg/tcpip/stack.(*PacketBuffer).Network(0xc0026732c0, 0xc00dfcc7e0, 0xed97820e2) pkg/tcpip/stack/packet_buffer.go:421 +0x1c7 fp=0xc005ccc950 sp=0xc005ccc8f8 pc=0x9e5727 gvisor.dev/gvisor/pkg/tcpip/transport/raw.(*endpoint).HandlePacket.func1(0xc0057f4b00, 0xc0026732c0, 0xc002673200) pkg/tcpip/transport/raw/endpoint.go:688 +0x348 fp=0xc005ccdf58 sp=0xc005ccc950 pc=0xbb2f68 gvisor.dev/gvisor/pkg/tcpip/transport/raw.(*endpoint).HandlePacket(0xc0057f4b00, 0xc0026732c0) pkg/tcpip/transport/raw/endpoint.go:818 +0x3f fp=0xc005ccdf80 sp=0xc005ccdf58 pc=0xbafb9f gvisor.dev/gvisor/pkg/tcpip/stack.(*transportDemuxer).deliverRawPacket(0xc0009a49c0, 0x1, 0xc000cbd400, 0x8) pkg/tcpip/stack/transport_demuxer.go:771 +0x1a3 fp=0xc005cce038 sp=0xc005ccdf80 pc=0x9fd143 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverRawPacket(0xc00000a1e0, 0xc000000001, 0xc000cbd400) pkg/tcpip/stack/nic.go:1123 +0x65 fp=0xc005cce070 sp=0xc005cce038 pc=0x9e2ae5 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).handleValidatedPacket(0xc000487100, 0xc00563a176, 0x14, 0x14, 0xc002673180, 0x142a62a, 0x2) pkg/tcpip/network/ipv4/ipv4.go:1145 +0xf82 fp=0xc005cce838 sp=0xc005cce070 pc=0xc03b82 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).HandlePacket(0xc000487100, 0xc002673180) pkg/tcpip/network/ipv4/ipv4.go:930 +0x1a5 fp=0xc005ccea98 sp=0xc005cce838 pc=0xc02585 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket(0xc00000a1e0, 0xc001829466, 0x6, 0xc001829470, 0x6, 0x800, 0xc002673180) pkg/tcpip/stack/nic.go:938 +0x3ae fp=0xc005cceb50 sp=0xc005ccea98 pc=0x9e1c2e gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).DeliverNetworkPacket(0xc0007225a0, 0xc001829466, 0x6, 0xc001829470, 0x6, 0x800, 0xc002673180) pkg/tcpip/link/nested/nested.go:63 +0x104 fp=0xc005ccebb0 sp=0xc005cceb50 pc=0xcb79c4 gvisor.dev/gvisor/pkg/tcpip/link/ethernet.(*Endpoint).DeliverNetworkPacket(0xc0007225a0, 0x0, 0x0, 0x0, 0x0, 0x800, 0xc002673180) pkg/tcpip/link/ethernet/ethernet.go:82 +0x1bb fp=0xc005ccec20 sp=0xc005ccebb0 pc=0xf9ba5b gvisor.dev/gvisor/pkg/tcpip/link/loopback.(*endpoint).WriteRawPacket(0xc00011eb00, 0xc0021c0280, 0x0, 0x0) pkg/tcpip/link/loopback/loopback.go:125 +0x128 fp=0xc005ccec90 sp=0xc005ccec20 pc=0xf9c628 gvisor.dev/gvisor/pkg/tcpip/link/loopback.(*endpoint).WritePackets(0xc00011eb00, 0xc0021c0280, 0xc0021c0280, 0x0, 0x0, 0xc000000800) pkg/tcpip/link/loopback/loopback.go:91 +0x90 fp=0xc005ccecd0 sp=0xc005ccec90 pc=0xf9c450 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(0xc0007225a0, 0xc0021c0280, 0xc0021c0280, 0x0, 0xc0046d6d00, 0x14864c8) pkg/tcpip/link/ethernet/ethernet.go:108 +0x10b fp=0xc005cced30 sp=0xc005ccecd0 pc=0xf9bc6b gvisor.dev/gvisor/pkg/tcpip/stack.(*delegatingQueueingDiscipline).WritePacket(0xc00011eb10, 0xc0021c0280, 0x0, 0xc0021c0280) pkg/tcpip/stack/nic.go:166 +0x75 fp=0xc005cced80 sp=0xc005cced30 pc=0x9de235 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).writePacket(0xc00000a1e0, 0xc0021c0280, 0xc0018293f0, 0x4) pkg/tcpip/stack/nic.go:448 +0xbb fp=0xc005ccedc8 sp=0xc005cced80 pc=0x9dfafb gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).WritePacket(0xc00000a1e0, 0xc000628dc0, 0xc0021c0280, 0x0, 0x0) pkg/tcpip/stack/nic.go:407 +0x229 fp=0xc005ccef08 sp=0xc005ccedc8 pc=0x9df8a9 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).writePacketPostRouting.func1(0xc0021c0280, 0xc00563a126, 0x14) pkg/tcpip/network/ipv4/ipv4.go:594 +0x52 fp=0xc005ccef40 sp=0xc005ccef08 pc=0xc091b2 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).handleFragments(0xc000487100, 0xc000628dc0, 0xc00000ffde, 0xc002673040, 0xc005ccf0e0, 0x142a62a, 0x2, 0x1, 0x0) pkg/tcpip/network/ipv4/ipv4.go:476 +0x166 fp=0xc005ccf070 sp=0xc005ccef40 pc=0xc000c6 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).writePacketPostRouting(0xc000487100, 0xc000628dc0, 0xc002673040, 0xc001829400, 0x4, 0xc00563a101) pkg/tcpip/network/ipv4/ipv4.go:588 +0x332 fp=0xc005ccf2b8 sp=0xc005ccf070 pc=0xc009b2 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).writePacket(0xc000487100, 0xc000628dc0, 0xc002673040, 0xc0018293f0, 0x4) pkg/tcpip/network/ipv4/ipv4.go:538 +0x205 fp=0xc005ccf340 sp=0xc005ccf2b8 pc=0xc00585 gvisor.dev/gvisor/pkg/tcpip/network/ipv4.(*endpoint).WritePacket(0xc000487100, 0xc000628dc0, 0x4000000001, 0xc002673040, 0x9e48d7, 0x15ea788) pkg/tcpip/network/ipv4/ipv4.go:500 +0x11b fp=0xc005ccf3b0 sp=0xc005ccf340 pc=0xc0033b gvisor.dev/gvisor/pkg/tcpip/stack.(*Route).WritePacket(0xc000628dc0, 0x4000000001, 0xc002673040, 0xc0029a14c0, 0xc002673040) pkg/tcpip/stack/route.go:572 +0xd7 fp=0xc005ccf3f0 sp=0xc005ccf3b0 pc=0x9ec517 gvisor.dev/gvisor/pkg/tcpip/transport/internal/network.(*WriteContext).WritePacket(0xc0029a14d8, 0xc002673040, 0x0, 0x1, 0xffe0) pkg/tcpip/transport/internal/network/endpoint.go:295 +0xd6 fp=0xc005ccf428 sp=0xc005ccf3f0 pc=0xba16b6 gvisor.dev/gvisor/pkg/tcpip/transport/raw.(*endpoint).write(0xc0054a4dc0, 0x15dbda8, 0xc008c985a0, 0xc005626a20, 0x0, 0x0, 0x0, 0x0) pkg/tcpip/transport/raw/endpoint.go:392 +0x53b fp=0xc005ccf5d8 sp=0xc005ccf428 pc=0xbaeb5b gvisor.dev/gvisor/pkg/tcpip/transport/raw.(*endpoint).Write(0xc0054a4dc0, 0x15dbda8, 0xc008c985a0, 0xc005626a20, 0xc001000000, 0x4, 0x0, 0xa80002) pkg/tcpip/transport/raw/endpoint.go:323 +0xc5 fp=0xc005ccf628 sp=0xc005ccf5d8 pc=0xbae2c5 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*socketOpsCommon).SendMsg(0xc0032fe690, 0xc0047baa80, 0x15f5780, 0xc009e58000, 0x0, 0x1, 0x20000040, 0xffe0, 0x100, 0xc0018293e0, ...) pkg/sentry/socket/netstack/netstack.go:3915 +0x243 fp=0xc005ccf788 sp=0xc005ccf628 pc=0xc4df23 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.sendSingleMsg(0xc0047baa80, 0x3fa854d11998, 0xc0032fe620, 0xc0032fe620, 0x20001440, 0xc000000040, 0x0, 0xc0047baa01, 0x563371c29f68) pkg/sentry/syscalls/linux/vfs2/socket.go:1437 +0x555 fp=0xc005ccfae8 sp=0xc005ccf788 pc=0xf76015 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.SendMMsg(0xc0047baa80, 0x4, 0x20001440, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/socket.go:1329 +0x37f fp=0xc005ccfbb8 sp=0xc005ccfae8 pc=0xf7563f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0047baa80, 0x133, 0x4, 0x20001440, 0x1, 0x0, 0x0, 0x0, 0xc000001fa0, 0x1425720, ...) pkg/sentry/kernel/task_syscall.go:115 +0x199 fp=0xc005ccfc78 sp=0xc005ccfbb8 pc=0xa83359 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0047baa80, 0x133, 0x4, 0x20001440, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:290 +0x70 fp=0xc005ccfd00 sp=0xc005ccfc78 pc=0xa84630 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0047baa80, 0x133, 0x4, 0x20001440, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:237 +0xb4 fp=0xc005ccfd60 sp=0xc005ccfd00 pc=0xa84114 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0047baa80, 0x2, 0xc0047baa80) pkg/sentry/kernel/task_syscall.go:204 +0x198 fp=0xc005ccfe30 sp=0xc005ccfd60 pc=0xa839f8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0047baa80, 0x15cdfa0, 0x0) pkg/sentry/kernel/task_run.go:294 +0xd9a fp=0xc005ccff68 sp=0xc005ccfe30 pc=0xa7691a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0047baa80, 0x2b5b) pkg/sentry/kernel/task_run.go:98 +0x1b9 fp=0xc005ccffd0 sp=0xc005ccff68 pc=0xa756d9 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc005ccffd8 sp=0xc005ccffd0 pc=0x472861 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:398 +0x116