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IPv6 doesn't work when using GOST with red:// and netns options #598

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przemyslaw0 opened this issue Oct 20, 2024 · 0 comments
Open

IPv6 doesn't work when using GOST with red:// and netns options #598

przemyslaw0 opened this issue Oct 20, 2024 · 0 comments

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@przemyslaw0
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Easy to reproduce:

ip netns add blah
ip netns exec blah ip link add d0 type dummy
ip netns exec blah ip link set d0 up
ip netns exec blah ip -4 addr add 10.0.0.1 dev d0
ip netns exec blah ip -6 addr add fc00::1 dev d0
ip netns exec blah ip -4 route add default dev d0
ip netns exec blah ip -6 route add default dev d0
ip netns exec blah ip link set lo up
ip netns exec blah iptables -t nat -A OUTPUT -p tcp -s 10.0.0.1 --syn -j REDIRECT --to-ports 9040
ip netns exec blah ip6tables -t nat -A OUTPUT -p tcp -s fc00::1 --syn -j REDIRECT --to-ports 9040

ip netns exec blah gost -L "red://127.0.0.1:9040" -L "red://[::1]:9040" -F "socks5://127.0.0.1:1080?netns=/proc/1/ns/net"

IPv4 works:

# ip netns exec blah curl 1.1.1.1
<html>
<head><title>301 Moved Permanently</title></head>
<body>
<center><h1>301 Moved Permanently</h1></center>
<hr><center>cloudflare</center>
</body>
</html>

But IPv6 doesn't:

# time ip netns exec blah curl http://[2606:4700:4700::1111]
^C

real	0m32.745s
user	0m0.003s
sys	0m0.005s

Socks5 Log:

V2Ray 5.16.1 (V2Fly, a community-driven edition of V2Ray.) Custom (go1.22.2 linux/amd64)
A unified platform for anti-censorship.
2024/10/19 20:12:03 tcp:127.0.0.1:47594 accepted tcp:1.1.1.1:80 [proxy]
2024/10/19 20:12:12 tcp:127.0.0.1:57020 accepted tcp:[2606:4700:4700::1111]:20480 [proxy]

GOST Log:

# ip netns exec blah gost -L "red://127.0.0.1:9040" -L "red://[::1]:9040" -F "socks5://127.0.0.1:1080?netns=/proc/1/ns/net"
{"handler":"red","kind":"service","level":"info","listener":"red","msg":"listening on 127.0.0.1:9040/tcp","service":"service-0","time":"2024-10-19T20:11:56.519-04:00"}
{"handler":"red","kind":"service","level":"info","listener":"red","msg":"listening on [::1]:9040/tcp","service":"service-1","time":"2024-10-19T20:11:56.519-04:00"}
{"handler":"red","kind":"handler","level":"info","listener":"red","local":"127.0.0.1:9040","msg":"10.0.0.1:36912 <> 127.0.0.1:9040","remote":"10.0.0.1:36912","service":"service-0","sid":"csa4lkun0d534a8ok27g","time":"2024-10-19T20:12:03.725-04:00"}
{"dst":"1.1.1.1:80/tcp","handler":"red","host":"1.1.1.1:80","kind":"handler","level":"info","listener":"red","local":"127.0.0.1:9040","msg":"10.0.0.1:36912 <-> 1.1.1.1:80","remote":"10.0.0.1:36912","service":"service-0","sid":"csa4lkun0d534a8ok27g","time":"2024-10-19T20:12:03.726-04:00"}
{"dst":"1.1.1.1:80/tcp","duration":2188351045,"handler":"red","host":"1.1.1.1:80","kind":"handler","level":"info","listener":"red","local":"127.0.0.1:9040","msg":"10.0.0.1:36912 >-< 1.1.1.1:80","remote":"10.0.0.1:36912","service":"service-0","sid":"csa4lkun0d534a8ok27g","time":"2024-10-19T20:12:05.914-04:00"}
{"dst":"1.1.1.1:80/tcp","duration":2188960474,"handler":"red","host":"1.1.1.1:80","inputBytes":71,"kind":"handler","level":"info","listener":"red","local":"127.0.0.1:9040","msg":"10.0.0.1:36912 >< 127.0.0.1:9040","outputBytes":386,"remote":"10.0.0.1:36912","service":"service-0","sid":"csa4lkun0d534a8ok27g","time":"2024-10-19T20:12:05.914-04:00"}
{"handler":"red","kind":"handler","level":"info","listener":"red","local":"[::1]:9040","msg":"[fc00::1]:42586 <> [::1]:9040","remote":"[fc00::1]:42586","service":"service-1","sid":"csa4ln6n0d534a8ok280","time":"2024-10-19T20:12:12.222-04:00"}
{"dst":"[2606:4700:4700::1111]:20480/tcp","handler":"red","host":"[2606:4700:4700::1111]:20480","kind":"handler","level":"info","listener":"red","local":"[::1]:9040","msg":"[fc00::1]:42586 <-> [2606:4700:4700::1111]:20480","remote":"[fc00::1]:42586","service":"service-1","sid":"csa4ln6n0d534a8ok280","time":"2024-10-19T20:12:12.222-04:00"}
{"dst":"[2606:4700:4700::1111]:20480/tcp","duration":59192655697,"handler":"red","host":"[2606:4700:4700::1111]:20480","kind":"handler","level":"info","listener":"red","local":"[::1]:9040","msg":"[fc00::1]:42586 >-< [2606:4700:4700::1111]:20480","remote":"[fc00::1]:42586","service":"service-1","sid":"csa4ln6n0d534a8ok280","time":"2024-10-19T20:13:11.415-04:00"}
{"dst":"[2606:4700:4700::1111]:20480/tcp","duration":59193217513,"handler":"red","host":"[2606:4700:4700::1111]:20480","inputBytes":86,"kind":"handler","level":"info","listener":"red","local":"[::1]:9040","msg":"[fc00::1]:42586 >< [::1]:9040","outputBytes":0,"remote":"[fc00::1]:42586","service":"service-1","sid":"csa4ln6n0d534a8ok280","time":"2024-10-19T20:13:11.415-04:00"}
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