panic: error when reading RouterAlert option's data bytes: EOF goroutine 283221 [running]: panic(0xfc8960, 0xc00d615460) GOROOT/src/runtime/panic.go:1064 +0x470 fp=0xc007afbcd0 sp=0xc007afbc18 pc=0x437030 gvisor.dev/gvisor/pkg/tcpip/header.(*IPv6OptionsExtHdrOptionsIterator).Next(0xc013239f20, 0x0, 0xc01ba37d40, 0x0, 0x0, 0x0) pkg/tcpip/header/ipv6_extension_headers.go:355 +0xa45 fp=0xc007afbde8 sp=0xc007afbcd0 pc=0x8eba05 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handlePacket(0xc0009f41c0, 0xc000c68f00) pkg/tcpip/network/ipv6/ipv6.go:867 +0x164b fp=0xc007afcd10 sp=0xc007afbde8 pc=0xb07bab gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket(0xc0009f41c0, 0xc000c68f00) pkg/tcpip/network/ipv6/ipv6.go:782 +0x128 fp=0xc007afd508 sp=0xc007afcd10 pc=0xb06468 gvisor.dev/gvisor/pkg/tcpip/stack.(*NIC).DeliverNetworkPacket(0xc0007549c0, 0xc00fa82f54, 0x6, 0x0, 0x0, 0x86dd, 0xc000c68f00) pkg/tcpip/stack/nic.go:681 +0x5f0 fp=0xc007afd5f8 sp=0xc007afd508 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(0xc000754968, 0xc008040000, 0x122, 0x122, 0x0, 0x1, 0x20000340) pkg/tcpip/link/tun/device.go:223 +0x33d fp=0xc007afd6e8 sp=0xc007afd5f8 pc=0xcd955d gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0xc000754900, 0x131b120, 0xc00838aa80, 0x13162a0, 0xc00840c000, 0x0, 0x1, 0x20000340, 0x122, 0x100, ...) pkg/sentry/devices/tundev/tundev.go:146 +0x1de fp=0xc007afd7f0 sp=0xc007afd6e8 pc=0xe54d3e gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0xc000754900, 0x131b120, 0xc00838aa80, 0x13162a0, 0xc00840c000, 0x0, 0x1, 0x20000340, 0x122, 0x100, ...) pkg/sentry/vfs/file_description.go:630 +0xa2 fp=0xc007afd870 sp=0xc007afd7f0 pc=0x7a3802 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write(0xc00838aa80, 0xc000754900, 0x13162a0, 0xc00840c000, 0x0, 0x1, 0x20000340, 0x122, 0x100, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:364 +0x9b fp=0xc007afda00 sp=0xc007afd870 pc=0xd90b7b gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write(0xc00838aa80, 0xf0, 0x20000340, 0x122, 0x2b134e5c49d0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:333 +0x1d4 fp=0xc007afdaf8 sp=0xc007afda00 pc=0xd904f4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00838aa80, 0x1, 0xf0, 0x20000340, 0x122, 0x2b134e5c49d0, 0x0, 0x0, 0x1, 0x119dd40, ...) pkg/sentry/kernel/task_syscall.go:104 +0x13c fp=0xc007afdc58 sp=0xc007afdaf8 pc=0x9cf85c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00838aa80, 0x1, 0xf0, 0x20000340, 0x122, 0x2b134e5c49d0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:239 +0x66 fp=0xc007afdce0 sp=0xc007afdc58 pc=0x9d0a26 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00838aa80, 0x1, 0xf0, 0x20000340, 0x122, 0x2b134e5c49d0, 0x0, 0x0, 0xde34ce, 0xc001b17060) pkg/sentry/kernel/task_syscall.go:199 +0x98 fp=0xc007afdd40 sp=0xc007afdce0 pc=0x9d05d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00838aa80, 0x2, 0xc00838aa80) pkg/sentry/kernel/task_syscall.go:174 +0x15c fp=0xc007afde10 sp=0xc007afdd40 pc=0x9cff7c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc00838aa80, 0x12ed3e0, 0x0) pkg/sentry/kernel/task_run.go:282 +0xc45 fp=0xc007afdf60 sp=0xc007afde10 pc=0x9c4385 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00838aa80, 0x3004) pkg/sentry/kernel/task_run.go:97 +0x1af fp=0xc007afdfd0 sp=0xc007afdf60 pc=0x9c304f runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc007afdfd8 sp=0xc007afdfd0 pc=0x4705a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:323 +0xfe