ddns-scripts: increment PKG_RELEASE

Increment PKG_RELEASE to reflect updates
Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>
ddns-scripts: send_update() detection private IPv4

correction of excluding private IPv4 in send_update() function.
Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Merge pull request #383 from chris5560/master

ddns-scripts: send_update() detection private IPv4