panic: error when reading RouterAlert option's data bytes: EOF goroutine 246336 [running]: panic(0x16ddae0, 0xc006b11aa0) GOROOT/src/runtime/panic.go:1064 +0x470 fp=0xc014fe3460 sp=0xc014fe33a8 pc=0x439090 gvisor.dev/gvisor/pkg/tcpip/header.(*IPv6OptionsExtHdrOptionsIterator).Next(0xc01ccceb10, 0x0, 0xc01ccdb7e0, 0x0, 0x0, 0x0) pkg/tcpip/header/ipv6_extension_headers.go:355 +0x1348 fp=0xc014fe3640 sp=0xc014fe3460 pc=0xbf2a48 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handlePacket(0xc0009ee1c0, 0xc000c360f0) pkg/tcpip/network/ipv6/ipv6.go:867 +0xe17 fp=0xc014fe4610 sp=0xc014fe3640 pc=0xf2cf97 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket(0xc0009ee1c0, 0xc000c360f0) pkg/tcpip/network/ipv6/ipv6.go:782 +0x1c5 fp=0xc014fe4e28 sp=0xc014fe4610 pc=0xf2c025 gvisor.dev/gvisor/pkg/tcpip/stack.(*NIC).DeliverNetworkPacket(0xc0002bd440, 0xc0046ec8e0, 0x6, 0x0, 0x0, 0x86dd, 0xc000c360f0) pkg/tcpip/stack/nic.go:681 +0xd48 fp=0xc014fe4ff8 sp=0xc014fe4e28 pc=0xc56b08 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(0xc0002bd3e8, 0xc01ccee000, 0x122, 0x122, 0x0, 0x1, 0x20000340) pkg/tcpip/link/tun/device.go:223 +0x5da fp=0xc014fe5198 sp=0xc014fe4ff8 pc=0x11f041a gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0xc0002bd380, 0x1aa52e0, 0xc01cead500, 0x1aa03e0, 0xc01cb53000, 0x0, 0x1, 0x20000340, 0x122, 0x100, ...) pkg/sentry/devices/tundev/tundev.go:146 +0x22b fp=0xc014fe52c8 sp=0xc014fe5198 pc=0x142b54b gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0xc0002bd380, 0x1aa52e0, 0xc01cead500, 0x1aa03e0, 0xc01cb53000, 0x0, 0x1, 0x20000340, 0x122, 0x100, ...) pkg/sentry/vfs/file_description.go:630 +0x131 fp=0xc014fe5398 sp=0xc014fe52c8 pc=0x9f17d1 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write(0xc01cead500, 0xc0002bd380, 0x1aa03e0, 0xc01cb53000, 0x0, 0x1, 0x20000340, 0x122, 0x100, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:364 +0xee fp=0xc014fe55b0 sp=0xc014fe5398 pc=0x12feb0e gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write(0xc01cead500, 0xf0, 0x20000340, 0x122, 0x2ad6c058e9d0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:333 +0x2a5 fp=0xc014fe5730 sp=0xc014fe55b0 pc=0x12fe3a5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc01cead500, 0x1, 0xf0, 0x20000340, 0x122, 0x2ad6c058e9d0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/kernel/task_syscall.go:104 +0x453 fp=0xc014fe59d0 sp=0xc014fe5730 pc=0xd619f3 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc01cead500, 0x1, 0xf0, 0x20000340, 0x122, 0x2ad6c058e9d0, 0x0, 0x0, 0x408638, 0xc01ceadddf) pkg/sentry/kernel/task_syscall.go:239 +0xba fp=0xc014fe5ab0 sp=0xc014fe59d0 pc=0xd6317a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc01cead500, 0x1, 0xf0, 0x20000340, 0x122, 0x2ad6c058e9d0, 0x0, 0x0, 0x137674b, 0x2d1b6d4) pkg/sentry/kernel/task_syscall.go:199 +0x10f fp=0xc014fe5b60 sp=0xc014fe5ab0 pc=0xd62a8f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc01cead500, 0x2, 0xc01cead500) pkg/sentry/kernel/task_syscall.go:174 +0x1ea fp=0xc014fe5ca0 sp=0xc014fe5b60 pc=0xd6222a gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc01cead500, 0x1a76f60, 0x0) pkg/sentry/kernel/task_run.go:282 +0x12a7 fp=0xc014fe5ed8 sp=0xc014fe5ca0 pc=0xd4dba7 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc01cead500, 0x3001) pkg/sentry/kernel/task_run.go:97 +0x398 fp=0xc014fe5fd0 sp=0xc014fe5ed8 pc=0xd4bcd8 runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc014fe5fd8 sp=0xc014fe5fd0 pc=0x4745e1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:323 +0x1a5