udp not working

[rudius]

i m trying v2.1.0 linux amd64 with command ./tun2socks-linux-amd64 -device tun://tun0 -proxy socks5://127.0.0.1:1080

I m routing all traffic from another linux on the network to the tun interface.

Tcp is working great but udp is not working at all.

i ve got this

WARN[7446] [UDP] write to 1.1.1.1:53 error: write udp [::]:40930->127.0.0.1:0: sendto: invalid argument
INFO[7446] [UDP] 192.168.0.35:34418 --> 1.1.1.1:53

[xjasonlyu]

Would mind to tell which socks5 server you were using with?

It’s wired that your server sent 127.0.0.1:0 as bind address in UDP.

[rudius]

it shadowproxy_libev on port 1080.

i just did ip link set dev tun0 up. I didn t attached an ip to it and my routes were going to dev tun0. Maybe it s that? TCP is working though

[xjasonlyu]

i just did ip link set dev tun0 up. I didn t attached an ip to it and my routes were going to dev tun0. Maybe it s that? TCP is working though

No, tun doesn’t need a ip address could still work if you have route table to it.

BTW, what is shadowproxy_libev? Do you mean shadowsocks_libev, if it is then which version of it?

[rudius]

yes it s shadowsocks-libev V3.1.3 on ubuntu 18.04

[xjasonlyu]

It seems like a server side issue due to wrong bind-address of UDP. You may need to upgrade ss-libev to latest version (v3.3.5 now) since a lot UDP issues have been resolved.

If this bug still exists, please let me know.

[rudius]

currently doing the update. I will let you know

[rudius]

you were right. It s working. Thanks