Hi SagerNet,

I'm a user of the clash.meta project, which depends on your sing-tun project. I'm having some trouble understanding how the auto-route feature works in my configuration. Could you please explain the purpose of the generated routing rules, specifically the rules in the 1970566510 table?

Here's an example of my configuration file:

tun:
  enable: true
  stack: gvisor
  dns-hijack:
    - any:53
  auto-route: true
  auto-detect-interface: true

And here's an example of the generated routing rules:

jo@amd-desktop:~$ ip rule
0:      from all lookup local
9000:   from all to 198.18.0.0/30 lookup 2022
9001:   from all ipproto icmp goto 9010
9002:   not from all dport 53 lookup main suppress_prefixlength 0
9002:   not from all iif lo lookup 2022
9002:   from 0.0.0.0 iif lo lookup 2022
9002:   from 198.18.0.0/30 iif lo lookup 2022
9010:   from all nop
32766:  from all lookup main
32767:  from all lookup default
jo@amd-desktop:$ ip route show table 2022
default dev Meta

Any insights you could provide would be greatly appreciated. Thanks in advance for your help!

秉承着谁打开谁关闭的原则，对于传入的fd需要dup一下，不知道我的想法对不对。

执行编译命令：

go build -tags "with_quic with_grpc with_dhcp with_wireguard with_ech with_utls with_reality_server with_acme with_clash_api with_v2ray_api with_gvisor" -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=1.8.13' -s -w -buildid=" ./cmd/sing-box

提示：

=" ./cmd/sing-box;8c530658-2ece-4fea-94bb-09ad09070c9agithub.com/sagernet/sing-tun
# github.com/sagernet/sing-tun
C:\Users\moles\go\pkg\mod\github.com\sagernet\[email protected]\stack_gvisor_filter.go:35:104: undefined: stack.PacketBufferPtr       
C:\Users\moles\go\pkg\mod\github.com\sagernet\[email protected]\stack_gvisor_udp.go:45:77: undefined: stack.PacketBufferPtr
C:\Users\moles\go\pkg\mod\github.com\sagernet\[email protected]\stack_gvisor_udp.go:177:58: undefined: stack.PacketBufferPtr
C:\Users\moles\go\pkg\mod\github.com\sagernet\[email protected]\stack_gvisor_udp.go:200:59: undefined: stack.PacketBufferPtr
C:\Users\moles\go\pkg\mod\github.com\sagernet\[email protected]\stack_gvisor_udp.go:208:59: undefined: stack.PacketBufferPtr
C:\Users\moles\go\pkg\mod\github.com\sagernet\[email protected]\tun_windows_gvisor.go:102:49: undefined: stack.PacketBufferPtr        
C:\Users\moles\go\pkg\mod\github.com\sagernet\[email protected]\tun_windows_gvisor.go:105:48: undefined: stack.PacketBufferPtr        
C:\Users\moles\go\pkg\mod\github.com\sagernet\[email protected]\stack_gvisor.go:125:46: too many arguments in call to gonet.NewUDPConn
        have (*stack.Stack, *waiter.Queue, tcpip.Endpoint)
        want (*waiter.Queue, tcpip.Endpoint)
C:\Users\moles\go\pkg\mod\github.com\sagernet\[email protected]\stack_mixed.go:59:46: too many arguments in call to gonet.NewUDPConn  
        have (*stack.Stack, *waiter.Queue, tcpip.Endpoint)
        want (*waiter.Queue, tcpip.Endpoint)

I can't find on the Internet how includeAllNetworks works, NetworkExtension is really a black box.

Since includeAllNetworks prioritizes TUN routes over DHCP 121 rules, it should work when possible instead of failing silently.

We now refuse to use system (and mixed) stack when includeAllNetworks is enabled.

If you know how to solve this problem, please help us.

Hello!
I wrote a network proxy program. I previously integrated xjasonlu/tun2socks and eycorsican/go-tun2socks by implementing the Dial/DialUDP and HandleTCP/HandleUDP interfaces. Because sing-tun supports system stack, I really want to integrate it to improve the performance of my program. Could you please give me some suggestions? If I want to integrate sing-tun, what interfaces need to be implemented? Thank you very much!

Reproduced

• sing-box v1.3-beta11
• clash meta v1.14.4

+0800 2023-05-03 14:42:11 INFO inbound/tun[tun-in]: started at utun3
......
+0800 2023-05-03 14:42:20 INFO router: updated default interface utun3, index 15

Mac Tun device creation code

	srcPrefix, err := netip.ParsePrefix("10.0.0.1/24")
	if err != nil {
		return nil, err
	}
	dstPrefix, err := netip.ParsePrefix("10.0.0.0/24")
	if err != nil {
		return nil, err
	}

	tun, err := stun.New(stun.Options{
		Name:              "utun3",
		Inet4Address:      []netip.Prefix{srcPrefix},
		MTU:               uint32(1420),
		AutoRoute:         true,
		Inet4RouteAddress: []netip.Prefix{dstPrefix},
	})

Linux Tun device creation code

	srcPrefix, err := netip.ParsePrefix("10.0.0.2/24")
	if err != nil {
		return nil, err
	}
	option := stun.Options{
		Name:         "tun3",
		Inet4Address: []netip.Prefix{srcPrefix},
		MTU:          uint32(1420),
	}
	tun, err := stun.New(option)

I established a tunnel between two machines, but when I forwarded the data packet read from the Mac tun device to the Linux tun device, he encountered this error

write tun: invalid argument

Hello,
Using Tun (via NekoRay and VLESS-Reality) along with GoLand causes high cpu usage.

The CPU usage of GoLand goes near to 35% continuously, the GoLand CPU debug shows java.net.http.common using a lot of cpu.
The high cpu usage starts after a while (like 10 minutes) of running goland (start tun before Goland)

You can start Goland without tun and see that there is no high cpu usage.

Tested with GoLand 2023.2.*

windows 10 32bit error...

panic: unaligned 64-bit atomic operation

goroutine 69 [running]:
runtime/internal/atomic.panicUnaligned()
$GOROOT/src/runtime/internal/atomic/unaligned.go:8 +0x2b
runtime/internal/atomic.Load64(0xb0321f4)
$GOROOT/src/runtime/internal/atomic/atomic_386.s:225 +0x10
github.com/sagernet/sing-tun.(*NativeTun).ReadPacket(0xb032120)
pkg/mod/github.com/sagernet/[email protected]/tun_windows.go:341 +0x107
github.com/sagernet/sing-tun.(*Mixed).wintunLoop(0xb091f50, {0x1f50a30, 0xb032120})
pkg/mod/github.com/sagernet/[email protected]/stack_mixed.go:128 +0x27
github.com/sagernet/sing-tun.(*Mixed).tunLoop(0xb091f50)
pkg/mod/github.com/sagernet/[email protected]/stack_mixed.go:91 +0x161
created by github.com/sagernet/sing-tun.(*Mixed).Start in goroutine 1
pkg/mod/github.com/sagernet/[email protected]/stack_mixed.go:84 +0x406