add checkip script and a client to update the IP
-rw-r--r-- 6 .gitignore
-rw-r--r-- 568 CMakeLists.txt
-rwxr-xr-x 136 checkip
-rwxr-xr-x 682 client.py
-rw-r--r-- 3122 dyn-nsupdate.cpp
-rwxr-xr-x 998 update