panic: error when reading RouterAlert option's data bytes: EOF goroutine 600 [running]: panic(0xfc88c0, 0xc000566310) GOROOT/src/runtime/panic.go:1064 +0x470 fp=0xc000253cd0 sp=0xc000253c18 pc=0x437030 gvisor.dev/gvisor/pkg/tcpip/header.(*IPv6OptionsExtHdrOptionsIterator).Next(0xc00039c390, 0x0, 0xc000638de0, 0x0, 0x0, 0x0) pkg/tcpip/header/ipv6_extension_headers.go:355 +0xa45 fp=0xc000253de8 sp=0xc000253cd0 pc=0x8eb665 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handlePacket(0xc00003b500, 0xc00046c1e0) pkg/tcpip/network/ipv6/ipv6.go:867 +0x164b fp=0xc000254d10 sp=0xc000253de8 pc=0xb0778b gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket(0xc00003b500, 0xc00046c1e0) pkg/tcpip/network/ipv6/ipv6.go:782 +0x128 fp=0xc000255508 sp=0xc000254d10 pc=0xb06048 gvisor.dev/gvisor/pkg/tcpip/stack.(*NIC).DeliverNetworkPacket(0xc0003f2300, 0xc0004d45c0, 0x6, 0x0, 0x0, 0x86dd, 0xc00046c1e0) pkg/tcpip/stack/nic.go:681 +0x5f0 fp=0xc0002555f8 sp=0xc000255508 pc=0x92ddf0 gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectLinkAddr(...) pkg/tcpip/link/channel/channel.go:190 gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write(0xc0003f22a8, 0xc000632340, 0x3e, 0x3e, 0x0, 0x1, 0x200000c0) pkg/tcpip/link/tun/device.go:223 +0x33d fp=0xc0002556e8 sp=0xc0002555f8 pc=0xcd965d gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0xc0003f2240, 0x131b080, 0xc0005c7500, 0x1316200, 0xc0008b2000, 0x0, 0x1, 0x200000c0, 0x3e, 0x100, ...) pkg/sentry/devices/tundev/tundev.go:146 +0x1de fp=0xc0002557f0 sp=0xc0002556e8 pc=0xe544be gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0xc0003f2240, 0x131b080, 0xc0005c7500, 0x1316200, 0xc0008b2000, 0x0, 0x1, 0x200000c0, 0x3e, 0x100, ...) pkg/sentry/vfs/file_description.go:630 +0xa2 fp=0xc000255870 sp=0xc0002557f0 pc=0x7a34c2 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write(0xc0005c7500, 0xc0003f2240, 0x1316200, 0xc0008b2000, 0x0, 0x1, 0x200000c0, 0x3e, 0x100, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:364 +0x9b fp=0xc000255a00 sp=0xc000255870 pc=0xd90c7b gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write(0xc0005c7500, 0xf0, 0x200000c0, 0x3e, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:333 +0x1d4 fp=0xc000255af8 sp=0xc000255a00 pc=0xd905f4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0005c7500, 0x1, 0xf0, 0x200000c0, 0x3e, 0x0, 0x0, 0x0, 0x1, 0x119dd40, ...) pkg/sentry/kernel/task_syscall.go:104 +0x13c fp=0xc000255c58 sp=0xc000255af8 pc=0x9cf23c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0005c7500, 0x1, 0xf0, 0x200000c0, 0x3e, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:239 +0x66 fp=0xc000255ce0 sp=0xc000255c58 pc=0x9d0406 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0005c7500, 0x1, 0xf0, 0x200000c0, 0x3e, 0x0, 0x0, 0x0, 0xde3045, 0xc000324068) pkg/sentry/kernel/task_syscall.go:199 +0x98 fp=0xc000255d40 sp=0xc000255ce0 pc=0x9cffb8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0005c7500, 0x2, 0xc0005c7500) pkg/sentry/kernel/task_syscall.go:174 +0x15c fp=0xc000255e10 sp=0xc000255d40 pc=0x9cf95c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0005c7500, 0x12ed3a0, 0x0) pkg/sentry/kernel/task_run.go:282 +0xc45 fp=0xc000255f60 sp=0xc000255e10 pc=0x9c3d65 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0005c7500, 0x10) pkg/sentry/kernel/task_run.go:97 +0x1af fp=0xc000255fd0 sp=0xc000255f60 pc=0x9c2a2f runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc000255fd8 sp=0xc000255fd0 pc=0x4705a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:323 +0xfe