panic: error when reading RouterAlert option's data bytes: EOF goroutine 146970 [running]: panic(0xfc7960, 0xc0014be900) GOROOT/src/runtime/panic.go:1064 +0x470 fp=0xc0043b3cd0 sp=0xc0043b3c18 pc=0x437030 gvisor.dev/gvisor/pkg/tcpip/header.(*IPv6OptionsExtHdrOptionsIterator).Next(0xc003ae5740, 0x0, 0xc001a713e0, 0x0, 0x0, 0x0) pkg/tcpip/header/ipv6_extension_headers.go:355 +0xa45 fp=0xc0043b3de8 sp=0xc0043b3cd0 pc=0x8eba05 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handlePacket(0xc000f46000, 0xc004164000) pkg/tcpip/network/ipv6/ipv6.go:867 +0x164b fp=0xc0043b4d10 sp=0xc0043b3de8 pc=0xb0772b gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket(0xc000f46000, 0xc004164000) pkg/tcpip/network/ipv6/ipv6.go:782 +0x128 fp=0xc0043b5508 sp=0xc0043b4d10 pc=0xb05fe8 gvisor.dev/gvisor/pkg/tcpip/stack.(*NIC).DeliverNetworkPacket(0xc000f30540, 0xc0001ff4f8, 0x6, 0x0, 0x0, 0x86dd, 0xc004164000) pkg/tcpip/stack/nic.go:681 +0x5f0 fp=0xc0043b55f8 sp=0xc0043b5508 pc=0x92e190 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(0xc000f304e8, 0xc004160000, 0x122, 0x122, 0x0, 0x1, 0x20000340) pkg/tcpip/link/tun/device.go:223 +0x33d fp=0xc0043b56e8 sp=0xc0043b55f8 pc=0xcd90dd gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0xc000f30480, 0x1319fc0, 0xc0041b2000, 0x1315140, 0xc004142000, 0x0, 0x1, 0x20000340, 0x122, 0x100, ...) pkg/sentry/devices/tundev/tundev.go:146 +0x1de fp=0xc0043b57f0 sp=0xc0043b56e8 pc=0xe53cbe gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0xc000f30480, 0x1319fc0, 0xc0041b2000, 0x1315140, 0xc004142000, 0x0, 0x1, 0x20000340, 0x122, 0x100, ...) pkg/sentry/vfs/file_description.go:630 +0xa2 fp=0xc0043b5870 sp=0xc0043b57f0 pc=0x7a3802 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write(0xc0041b2000, 0xc000f30480, 0x1315140, 0xc004142000, 0x0, 0x1, 0x20000340, 0x122, 0x100, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:364 +0x9b fp=0xc0043b5a00 sp=0xc0043b5870 pc=0xd906fb gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write(0xc0041b2000, 0xf0, 0x20000340, 0x122, 0x2ba2b35569d0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:333 +0x1d4 fp=0xc0043b5af8 sp=0xc0043b5a00 pc=0xd90074 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0041b2000, 0x1, 0xf0, 0x20000340, 0x122, 0x2ba2b35569d0, 0x0, 0x0, 0xdd5637, 0x119cd40, ...) pkg/sentry/kernel/task_syscall.go:104 +0x13c fp=0xc0043b5c58 sp=0xc0043b5af8 pc=0x9cf85c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0041b2000, 0x1, 0xf0, 0x20000340, 0x122, 0x2ba2b35569d0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:239 +0x66 fp=0xc0043b5ce0 sp=0xc0043b5c58 pc=0x9d0a26 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0041b2000, 0x1, 0xf0, 0x20000340, 0x122, 0x2ba2b35569d0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:199 +0x98 fp=0xc0043b5d40 sp=0xc0043b5ce0 pc=0x9d05d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0041b2000, 0x2, 0xc0041b2000) pkg/sentry/kernel/task_syscall.go:174 +0x15c fp=0xc0043b5e10 sp=0xc0043b5d40 pc=0x9cff7c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0041b2000, 0x12ec280, 0x0) pkg/sentry/kernel/task_run.go:282 +0xc45 fp=0xc0043b5f60 sp=0xc0043b5e10 pc=0x9c4385 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0041b2000, 0x5fb) pkg/sentry/kernel/task_run.go:97 +0x1af fp=0xc0043b5fd0 sp=0xc0043b5f60 pc=0x9c304f runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc0043b5fd8 sp=0xc0043b5fd0 pc=0x4705a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:323 +0xfe