ipv6_first option in android

[AmirHosseinCV]

Describe the bug I need something like "ipv6_first" in android. My ipv6 can be detected in ipv6-test.com but it's not the default. I have imported this configuration file into the android client:

{
"server":"46.38.xxx.xxx",
"server_port":5532,
"local_address": "127.0.0.1",
"local_port":1080,
"password":"xxxxxxxxx",
"timeout":600,
"method":"chacha20-ietf-poly1305",
"mode": "tcp_and_udp",
"fast_open": true,
"ipv6_first": true
}

To Reproduce Steps to reproduce the behavior:

1. Connect to any shadowsocks server

Expected behavior I want ipv6 to be the default.

Screenshots

Smartphone (please complete the following information):

• Android version: 9
• Device: Samsung galaxy j7 pro
• Version: 5.2.6