panic: error when reading RouterAlert option's data bytes: EOF goroutine 470 [running]: panic(0x10ae8c0, 0xc000612050) GOROOT/src/runtime/panic.go:1064 +0x470 fp=0xc000d4fde0 sp=0xc000d4fd28 pc=0x437030 gvisor.dev/gvisor/pkg/tcpip/header.(*IPv6OptionsExtHdrOptionsIterator).Next(0xc000a2c750, 0x0, 0xc000b82740, 0x0, 0x0, 0x0) pkg/tcpip/header/ipv6_extension_headers.go:389 +0xb5f fp=0xc000d4fef8 sp=0xc000d4fde0 pc=0x94d97f gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handlePacket(0xc0002a3340, 0xc000640000) pkg/tcpip/network/ipv6/ipv6.go:1044 +0x19ba fp=0xc000d50dd8 sp=0xc000d4fef8 pc=0xbab35a gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket(0xc0002a3340, 0xc000640000) pkg/tcpip/network/ipv6/ipv6.go:935 +0x17a fp=0xc000d515d0 sp=0xc000d50dd8 pc=0xba985a gvisor.dev/gvisor/pkg/tcpip/stack.(*NIC).DeliverNetworkPacket(0xc0005b0240, 0xc000600a0a, 0x6, 0x0, 0x0, 0x86dd, 0xc000640000) pkg/tcpip/stack/nic.go:829 +0x6c2 fp=0xc000d516c0 sp=0xc000d515d0 pc=0x995b02 gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectLinkAddr(...) pkg/tcpip/link/channel/channel.go:222 gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write(0xc0005b01e8, 0xc000780200, 0x3e, 0x3e, 0x200000c0, 0x3e, 0x100) pkg/tcpip/link/tun/device.go:272 +0x474 fp=0xc000d517b8 sp=0xc000d516c0 pc=0xd9caf4 gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0xc0005b0180, 0x141c740, 0xc00062ca80, 0x14178e0, 0xc000d57000, 0x0, 0x1, 0x200000c0, 0x3e, 0x100, ...) pkg/sentry/devices/tundev/tundev.go:173 +0x1a9 fp=0xc000d51888 sp=0xc000d517b8 pc=0xf33889 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0xc0005b0180, 0x141c740, 0xc00062ca80, 0x14178e0, 0xc000d57000, 0x0, 0x1, 0x200000c0, 0x3e, 0x100, ...) pkg/sentry/vfs/file_description.go:710 +0xb5 fp=0xc000d51908 sp=0xc000d51888 pc=0x7d6675 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write(0xc00062ca80, 0xc0005b0180, 0x14178e0, 0xc000d57000, 0x0, 0x1, 0x200000c0, 0x3e, 0x100, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:454 +0xa5 fp=0xc000d51a98 sp=0xc000d51908 pc=0xe5e845 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write(0xc00062ca80, 0xf0, 0x200000c0, 0x3e, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:417 +0x21e fp=0xc000d51b90 sp=0xc000d51a98 pc=0xe5e0de gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00062ca80, 0x1, 0xf0, 0x200000c0, 0x3e, 0x0, 0x0, 0x0, 0x0, 0x1283d40, ...) pkg/sentry/kernel/task_syscall.go:116 +0x1b9 fp=0xc000d51c50 sp=0xc000d51b90 pc=0xa49119 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00062ca80, 0x1, 0xf0, 0x200000c0, 0x3e, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:291 +0x70 fp=0xc000d51cd8 sp=0xc000d51c50 pc=0xa4a3d0 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00062ca80, 0x1, 0xf0, 0x200000c0, 0x3e, 0x0, 0x0, 0x0, 0xc0001c20a8, 0xc000392540) pkg/sentry/kernel/task_syscall.go:238 +0xb4 fp=0xc000d51d38 sp=0xc000d51cd8 pc=0xa49ed4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00062ca80, 0x2, 0xc00062ca80) pkg/sentry/kernel/task_syscall.go:205 +0x198 fp=0xc000d51e08 sp=0xc000d51d38 pc=0xa497b8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc00062ca80, 0x13eed60, 0x0) pkg/sentry/kernel/task_run.go:327 +0xd95 fp=0xc000d51f60 sp=0xc000d51e08 pc=0xa3c275 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00062ca80, 0xd) pkg/sentry/kernel/task_run.go:100 +0x1e2 fp=0xc000d51fd0 sp=0xc000d51f60 pc=0xa3ad82 runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc000d51fd8 sp=0xc000d51fd0 pc=0x4705a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:374 +0x116