panic: IPv6 payload too large: 65537, must be <= 65535 goroutine 514 [running]: panic(0x16eb8e0, 0xc000622020) GOROOT/src/runtime/panic.go:1064 +0x470 fp=0xc000823500 sp=0xc000823448 pc=0x439090 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).addIPHeader(0xc000438340, 0xc0004461a0, 0x10, 0xc0004461a0, 0x10, 0xc00066a000, 0x4000000011, 0x0, 0x0, 0x0) pkg/tcpip/network/ipv6/ipv6.go:547 +0x319 fp=0xc0008235d8 sp=0xc000823500 pc=0xf312b9 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).WritePacket(0xc000438340, 0xc0006f20b0, 0x0, 0x4000000011, 0xc00066a000, 0x475fac) pkg/tcpip/network/ipv6/ipv6.go:612 +0x109 fp=0xc000823a78 sp=0xc0008235d8 pc=0xf318a9 gvisor.dev/gvisor/pkg/tcpip/stack.(*Route).WritePacket(0xc0006f20b0, 0x0, 0x4000000011, 0xc00066a000, 0x8) pkg/tcpip/stack/route.go:410 +0x133 fp=0xc000823ad8 sp=0xc000823a78 pc=0xc65d73 gvisor.dev/gvisor/pkg/tcpip/transport/udp.sendUDP(0xc0006f20b0, 0xc00000e140, 0x1, 0x1, 0xfff9, 0x1004e21b921, 0x1a926e0, 0xc000696a80, 0x7f2200000000, 0x0) pkg/tcpip/transport/udp/endpoint.go:898 +0x6d8 fp=0xc000824b68 sp=0xc000823ad8 pc=0xf032f8 gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).write(0xc000214780, 0x1a952e0, 0xc00070e0f0, 0xc00000e100, 0xc000000000, 0x0, 0x0, 0x0) pkg/tcpip/transport/udp/endpoint.go:563 +0x79f fp=0xc000824d38 sp=0xc000824b68 pc=0xf002df gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).Write(0xc000214780, 0x1a952e0, 0xc00070e0f0, 0xc00000e100, 0xc000000000, 0x10, 0x4e21, 0xa) pkg/tcpip/transport/udp/endpoint.go:407 +0x85 fp=0xc000824da0 sp=0xc000824d38 pc=0xeff8c5 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*socketOpsCommon).SendMsg(0xc00025f6f0, 0xc000696a80, 0x1ab0920, 0xc000852000, 0xc000136080, 0x8, 0x0, 0xfff9, 0x100, 0xc000392000, ...) pkg/sentry/socket/netstack/netstack.go:2983 +0x23d fp=0xc000825158 sp=0xc000824da0 pc=0xf6b87d gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketVFS2).SendMsg(0xc00025f680, 0xc000696a80, 0x1ab0920, 0xc000852000, 0xc000136080, 0x8, 0x0, 0xfff9, 0x100, 0xc000392000, ...) :1 +0x178 fp=0xc000825318 sp=0xc000825158 pc=0xf808b8 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.sendSingleMsg(0xc000696a80, 0x7f22d5641ac0, 0xc00025f680, 0xc00025f680, 0x20000040, 0x0, 0x0, 0xc00081d690, 0xc00081daa8) pkg/sentry/syscalls/linux/vfs2/socket.go:1051 +0x41a fp=0xc000825648 sp=0xc000825318 pc=0x13185da gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.SendMsg(0xc000696a80, 0x3, 0x20000040, 0x0, 0x1, 0x1, 0x1, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/socket.go:929 +0x2c6 fp=0xc000825730 sp=0xc000825648 pc=0x1317926 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000696a80, 0x2e, 0x3, 0x20000040, 0x0, 0x1, 0x1, 0x1, 0x13, 0x138cd40, ...) pkg/sentry/kernel/task_syscall.go:104 +0x453 fp=0xc0008259d0 sp=0xc000825730 pc=0xd66f13 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000696a80, 0x2e, 0x3, 0x20000040, 0x0, 0x1, 0x1, 0x1, 0x408638, 0xc00069735f) pkg/sentry/kernel/task_syscall.go:239 +0xba fp=0xc000825ab0 sp=0xc0008259d0 pc=0xd6869a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000696a80, 0x2e, 0x3, 0x20000040, 0x0, 0x1, 0x1, 0x1, 0x13822eb, 0x2d32814) pkg/sentry/kernel/task_syscall.go:199 +0x10f fp=0xc000825b60 sp=0xc000825ab0 pc=0xd67faf gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000696a80, 0x2, 0xc000696a80) pkg/sentry/kernel/task_syscall.go:174 +0x1ea fp=0xc000825ca0 sp=0xc000825b60 pc=0xd6774a gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc000696a80, 0x1a877a0, 0x0) pkg/sentry/kernel/task_run.go:282 +0x12a7 fp=0xc000825ed8 sp=0xc000825ca0 pc=0xd530c7 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000696a80, 0xf) pkg/sentry/kernel/task_run.go:97 +0x398 fp=0xc000825fd0 sp=0xc000825ed8 pc=0xd511f8 runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc000825fd8 sp=0xc000825fd0 pc=0x4745e1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:323 +0x1a5