ddns-scripts: fix ticket #17998: wrongly detect ipv4 start with 10x.x.x.x

Thanks to "eqsun" for report and offer of fix.
Otherwise the ip address starts with 100~109 will be treated as invalid.
Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>
ddns-scripts: increment PKG_RELEASE

Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Merge pull request #377 from chris5560/master

ddns-scripts: fix from ticket #17998 wrongly detect ipv4 address start with 10x.x.x.x