Add more private IP address ranges to the default filter exemption list

And the IPv4 link local address block (169.254/16) too.

ctrl/ipfilter_exempt.cfg

-; Enter IP addresses that are exempt from filtering/banning/throttling into this file
-; Wildcard characters (*, ^, ~) are allowed and ! negates the match
-127.*
-::1
\ No newline at end of file
+; IP addresses that are exempt from filtering/banning/throttling
+; Wildcard characters (*, ^, ~) are allowed
+; IPv4 CIDR notation is supported
+; ! negates the match
+::1
+127.0.0.0/8
+10.0.0.0/8
+169.254.0.0/16
+172.16.0.0/12
+192.168.0.0/16