panic: IPv6 payload too large: 65537, must be <= 65535 goroutine 526 [running]: panic(0x10b7f00, 0xc00019d3e0) GOROOT/src/runtime/panic.go:1064 +0x470 fp=0xc0006b7ff8 sp=0xc0006b7f40 pc=0x437030 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).addIPHeader(0xc00033e680, 0xc0004a3380, 0x10, 0xc0004a3380, 0x10, 0xc000a68000, 0x4000000011, 0x0, 0x0, 0x0) pkg/tcpip/network/ipv6/ipv6.go:621 +0x2e5 fp=0xc0006b80c8 sp=0xc0006b7ff8 pc=0xbacbe5 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).WritePacket(0xc00033e680, 0xc0004e26e0, 0x0, 0x4000000011, 0xc000a68000, 0xc0004e25b8) pkg/tcpip/network/ipv6/ipv6.go:698 +0xb9 fp=0xc0006b8508 sp=0xc0006b80c8 pc=0xbad0f9 gvisor.dev/gvisor/pkg/tcpip/stack.(*Route).WritePacket(0xc0004e26e0, 0x0, 0x4000000011, 0xc000a68000, 0x8) pkg/tcpip/stack/route.go:505 +0xd7 fp=0xc0006b8548 sp=0xc0006b8508 pc=0x9a0f17 gvisor.dev/gvisor/pkg/tcpip/transport/udp.sendUDP(0xc0004e26e0, 0xc000475aa0, 0x1, 0x1, 0xfff9, 0x1004e2182f8, 0x1406440, 0xc0006f2a80, 0x0, 0x0) pkg/tcpip/transport/udp/endpoint.go:1118 +0x487 fp=0xc0006b9548 sp=0xc0006b8548 pc=0xb89ae7 gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).write(0xc0005be780, 0x1409040, 0xc00047cb40, 0xc000475a80, 0x0, 0x0, 0x0, 0x0) pkg/tcpip/transport/udp/endpoint.go:683 +0x792 fp=0xc0006b96d0 sp=0xc0006b9548 pc=0xb87352 gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).Write(0xc0005be780, 0x1409040, 0xc00047cb40, 0xc000475a80, 0xc000000000, 0x10, 0x4e21, 0xc0006b000a) pkg/tcpip/transport/udp/endpoint.go:476 +0x72 fp=0xc0006b9720 sp=0xc0006b96d0 pc=0xb86992 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*socketOpsCommon).SendMsg(0xc000a4fcf0, 0xc0006f2a80, 0x1423d00, 0xc0006fe000, 0xc00056b080, 0x8, 0x0, 0xfff9, 0x100, 0xc0004629a0, ...) pkg/sentry/socket/netstack/netstack.go:3846 +0x1c4 fp=0xc0006b98b0 sp=0xc0006b9720 pc=0xbd56c4 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.sendSingleMsg(0xc0006f2a80, 0x7fb046c5a460, 0xc000a4fc80, 0xc000a4fc80, 0x20000040, 0x0, 0x3d, 0x56e6, 0xc0006b9bd4) pkg/sentry/syscalls/linux/vfs2/socket.go:1361 +0x435 fp=0xc0006b9af0 sp=0xc0006b98b0 pc=0xe74a15 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.SendMsg(0xc0006f2a80, 0x3, 0x20000040, 0x0, 0x1, 0x1, 0x1, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/socket.go:1193 +0x23c fp=0xc0006b9b90 sp=0xc0006b9af0 pc=0xe73b9c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0006f2a80, 0x2e, 0x3, 0x20000040, 0x0, 0x1, 0x1, 0x1, 0x0, 0x128ea20, ...) pkg/sentry/kernel/task_syscall.go:116 +0x1b9 fp=0xc0006b9c50 sp=0xc0006b9b90 pc=0xa4d139 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0006f2a80, 0x2e, 0x3, 0x20000040, 0x0, 0x1, 0x1, 0x1, 0x1, 0x1) pkg/sentry/kernel/task_syscall.go:291 +0x70 fp=0xc0006b9cd8 sp=0xc0006b9c50 pc=0xa4e3f0 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0006f2a80, 0x2e, 0x3, 0x20000040, 0x0, 0x1, 0x1, 0x1, 0xc000994428, 0xc000306c00) pkg/sentry/kernel/task_syscall.go:238 +0xb4 fp=0xc0006b9d38 sp=0xc0006b9cd8 pc=0xa4def4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0006f2a80, 0x2, 0xc0006f2a80) pkg/sentry/kernel/task_syscall.go:205 +0x198 fp=0xc0006b9e08 sp=0xc0006b9d38 pc=0xa4d7d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0006f2a80, 0x13fb3e0, 0x0) pkg/sentry/kernel/task_run.go:327 +0xd95 fp=0xc0006b9f60 sp=0xc0006b9e08 pc=0xa40295 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0006f2a80, 0xe) pkg/sentry/kernel/task_run.go:100 +0x1e2 fp=0xc0006b9fd0 sp=0xc0006b9f60 pc=0xa3eda2 runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc0006b9fd8 sp=0xc0006b9fd0 pc=0x4705a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:374 +0x116