nslookup get public/external IP

nslookup myip.opendns.com resolver1.opendns.com

Server: resolver1.opendns.com
Address: 208.67.222.222

Non-authoritative answer:
Name: myip.opendns.com
Address: xxx.xxx.xxx.xxx

or

curl icanhazip.com

原文：https://www.cnblogs.com/nlsoft/p/9053845.html