Obtain an externally routable IPv4 address using the STUN protocol over UDP. Small home and private networks often use private IPv4 network address. Applications like Dynamic DNS which require the external Internet routable address mapped to this private network. Most users rely on the HTTP/HTTPS protocols and websites like https://ifconfig.co/.
STUN offers a lightweight alternative requiring fewer than 100 bytes sent and received via UDP making STUN a great choice for embedded or lower-end compute devices.
stunip.py is self-contained and only needs Python 3.x. The simplest
use-case is to git clone this repo and run directly.
If no server is specified a random Google public STUN server will be used. However, there are many other servers which may be faster depending on your geographical region and you can find a list of public STUN servers here.