panic: runtime error: slice bounds out of range [12:0]

goroutine 6533 [running]:
panic(0x10e6560, 0xc0007ee1e0)
	GOROOT/src/runtime/panic.go:1064 +0x545 fp=0xc000cd53d0 sp=0xc000cd5308 pc=0x437265
runtime.goPanicSliceB(0xc, 0x0)
	GOROOT/src/runtime/panic.go:116 +0xa5 fp=0xc000cd5418 sp=0xc000cd53d0 pc=0x435125
gvisor.dev/gvisor/pkg/tcpip/header.Ethernet.Encode(...)
	pkg/tcpip/header/eth.go:115
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*tunEndpoint).AddHeader(0xc00089ab80, 0x0, 0x0, 0x11bda0c, 0x6, 0xc000000800, 0xc000ede000)
	pkg/tcpip/link/tun/device.go:373 +0x1cf fp=0xc000cd5488 sp=0xc000cd5418 pc=0xce254f
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).encodePkt(0xc00014c8a8, 0xc000cd5600, 0x800, 0x0, 0xc00043a038, 0x4)
	pkg/tcpip/link/tun/device.go:275 +0x55a fp=0xc000cd5578 sp=0xc000cd5488 pc=0xce1e3a
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Read(0xc00014c8a8, 0x4, 0x100, 0x0, 0x0, 0x4)
	pkg/tcpip/link/tun/device.go:242 +0x138 fp=0xc000cd56f0 sp=0xc000cd5578 pc=0xce17d8
gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Read(0xc00014c840, 0x1339e60, 0xc000cf6a80, 0x1334ce0, 0xc001092000, 0x0, 0x1, 0x7f7ffce335d0, 0x3e8, 0x100, ...)
	pkg/sentry/devices/tundev/tundev.go:123 +0x46 fp=0xc000cd57b8 sp=0xc000cd56f0 pc=0xe5ee26
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Read(0xc00014c840, 0x1339e60, 0xc000cf6a80, 0x1334ce0, 0xc001092000, 0x0, 0x1, 0x7f7ffce335d0, 0x3e8, 0x100, ...)
	pkg/sentry/vfs/file_description.go:623 +0xdb fp=0xc000cd5870 sp=0xc000cd57b8 pc=0x7ab55b
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.read(0xc000cf6a80, 0xc00014c840, 0x1334ce0, 0xc001092000, 0x0, 0x1, 0x7f7ffce335d0, 0x3e8, 0x100, 0x0, ...)
	pkg/sentry/syscalls/linux/vfs2/read_write.go:94 +0x9b fp=0xc000cd5a00 sp=0xc000cd5870 pc=0xd9731b
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Read(0xc000cf6a80, 0xf0, 0x7f7ffce335d0, 0x3e8, 0x0, 0x0, 0x7f7ffce33450, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/vfs2/read_write.go:63 +0x1d4 fp=0xc000cd5af8 sp=0xc000cd5a00 pc=0xd96c94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000cf6a80, 0x0, 0xf0, 0x7f7ffce335d0, 0x3e8, 0x0, 0x0, 0x7f7ffce33450, 0xddf7f7, 0x11baee0, ...)
	pkg/sentry/kernel/task_syscall.go:104 +0x13c fp=0xc000cd5c58 sp=0xc000cd5af8 pc=0x9d429c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000cf6a80, 0x0, 0xf0, 0x7f7ffce335d0, 0x3e8, 0x0, 0x0, 0x7f7ffce33450, 0x0, 0x7f7ffce33450)
	pkg/sentry/kernel/task_syscall.go:239 +0x66 fp=0xc000cd5ce0 sp=0xc000cd5c58 pc=0x9d5466
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000cf6a80, 0x0, 0xf0, 0x7f7ffce335d0, 0x3e8, 0x0, 0x0, 0x7f7ffce33450, 0x0, 0x0)
	pkg/sentry/kernel/task_syscall.go:199 +0x98 fp=0xc000cd5d40 sp=0xc000cd5ce0 pc=0x9d5018
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000cf6a80, 0x2, 0xc000cf6a80)
	pkg/sentry/kernel/task_syscall.go:174 +0x15c fp=0xc000cd5e10 sp=0xc000cd5d40 pc=0x9d49bc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc000cf6a80, 0x130aa20, 0x0)
	pkg/sentry/kernel/task_run.go:282 +0xc45 fp=0xc000cd5f60 sp=0xc000cd5e10 pc=0x9c8dc5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000cf6a80, 0xd8)
	pkg/sentry/kernel/task_run.go:97 +0x1af fp=0xc000cd5fd0 sp=0xc000cd5f60 pc=0x9c7a8f
runtime.goexit()
	src/runtime/asm_amd64.s:1374 +0x1 fp=0xc000cd5fd8 sp=0xc000cd5fd0 pc=0x4709a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:323 +0xfe