xray v1.7.5 not listen for ipv4

[fissssssh]

xray version: v1.7.5
config:

{
    "log": {
        "loglevel": "info"
    },
    "inbounds": [
        {
            "port": 443,
            "protocol": "vless",
            "settings": {
                "clients": [
                    {
                        "id": "***",
                        "flow": "xtls-rprx-vision"
                    }
                ],
                "decryption": "none",
                "fallbacks": [
                    {
                        "alpn": "h2",
                        "dest": "/dev/shm/nginx/h2.sock"
                    },
                    {
                        "dest": "/dev/shm/nginx/default.sock"
                    }
                ]
            },
            "streamSettings": {
                "network": "tcp",
                "security": "tls",
                "tlsSettings": {
                    "alpn": [
                        "h2",
                        "http/1.1"
                    ],
                    "minVersion": "1.2",
                    "certificates": [
                        {
                            "certificateFile": "/usr/local/nginx/certs/**.cer",
                            "keyFile": "/usr/local/nginx/certs/**.key",
                            "ocspStapling": 3600
                        }
                    ]
                }
            }
        }
    ],
    "outbounds": [
        {
            "protocol": "freedom"
        }
    ]
}

log

# journalctl -u xray | tail
Apr 16 04:56:16 xray systemd[1]: Starting Xray Service...
Apr 16 04:56:16 xray systemd[1]: Started Xray Service.
Apr 16 04:56:16 xray xray[36284]: Xray 1.7.5 (Xray, Penetrates Everything.) Custom (go1.20 linux/amd64)
Apr 16 04:56:16 xray xray[36284]: A unified platform for anti-censorship.
Apr 16 04:56:16 xray xray[36284]: 2023/04/16 04:56:16 [Info] infra/conf/serial: Reading config: /usr/local/etc/xray/config.json
Apr 16 04:56:16 xray xray[36284]: 2023/04/16 04:56:16 [Info] transport/internet/tcp: listening TCP on 0.0.0.0:443
Apr 16 04:56:16 xray xray[36284]: 2023/04/16 04:56:16 [Warning] core: Xray 1.7.5 started

netstat

# netstat -ntlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      36171/nginx: master
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      36171/nginx: master
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1891/sshd: /usr/sbi
tcp6       0      0 :::80                   :::*                    LISTEN      36171/nginx: master
tcp6       0      0 :::80                   :::*                    LISTEN      36171/nginx: master
tcp6       0      0 :::22                   :::*                    LISTEN      1891/sshd: /usr/sbi
tcp6       0      0 :::443                  :::*                    LISTEN      36284/xray

why only listen tcp6?

[FranzKafkaYu]

@fissssssh The v6 address is compatible with the v4 address. Even if it is listening to v6, you still can connect it via v4. If the kernel option BindIPv6Only is enabled, it cannot be connect via v4.

[SakuraSakuraSakuraChan]

@fissssssh lsof plz

[fissssssh]

@fissssssh lsof plz

# lsof -i:443
COMMAND   PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
xray    36284 root    3u  IPv6  54861      0t0  TCP *:https (LISTEN)

[nursery01]

"inbounds": [
        {
            "listen": "0.0.0.0", 
            "port": 443,

[SakuraSakuraSakuraChan]

golang/go#9334
golang/go#17615
mholt/caddy-l4#47

It's golang's intended behavior

[fissssssh]

@fissssssh The v6 address is compatible with the v4 address. Even if it is listening to v6, you still can connect it via v4. If the kernel option BindIPv6Only is enabled, it cannot be connect via v4.

yes