linux檢視本機ip:
curl http://members.3322.org/dyndns/getip
curl ip.6655.com/ip.aspx
curl icanhazip.com
curl ident.me
curl ipecho.net/plain
curl whatismyip.akamai.com
curl myip.dnsomatic.com
curl ip.6655.com/ip.aspx?area=1
curl cip.cc
wget -qo - ifconfig.co
curl v4.ident.me