CentOS 7: incorrect detection of public server IP

[dvershinin]

The installer suggests the following:

IPv4 or IPv6 public address: 188.188.188.188 peer 10.0.0.1

For a newbie like me, this may appear correct (partially includes the public IP), but includes extraneous "peer 10.0.0.1" which gives problems later on!

ip -4 addr output:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    inet 188.188.188.188 peer 10.0.0.1/32 brd 188.188.188.188 scope global eth0
       valid_lft forever preferred_lft forever
    inet 188.188.188.188/32 scope global eth0
       valid_lft forever preferred_lft forever

In the outputs above, I obfuscated the real public IP with 188.188.188.188, for obvious reasons.

[V-ctor]

Moreover it gets public IP as IP address from ethernet interface, but server can be behind NAT already then its eth0 IP4 address is 10.0.0.1 or sort of. I guess that more reliable way to get it by asking some public service like we have here : grep -m 1 -oE '^[0-9]{1,3}(\.[0-9]{1,3}){3}$' <<< "$(wget -T 10 -t 1 -4qO- "http://ip1.dynupdate.no-ip.com/" || curl -m 10 -4Ls "http://ip1.dynupdate.no-ip.com/")"

[dvershinin]

curl is most universally available. I think no need for wget at all. Just curl ifconfig.me does it for me.

[V-ctor]

I don't insist with wget. Yes curl ifconfig.me works for me too.

[angristan]

Closing as CentOS 7 won't be supported any more