c86e3f1 created the issue
In ch/cyberduck/core/SystemconfigurationProxy.m, in method
+ (BOOL)isHostExcluded:(NSString *)hostname
it ignores the CIDR styled pattern such as 192.168/16 or 172.16/16 or 10/8, would it be possible to include it? This will make proxy exception handling more complete.
Cheers,