[transports] validate IP when trying connect to remote peer for being in reserved IP range

Signed-off-by: R4SAS <r4sas@i2pmail.org>

libi2pd/util.h

@@ -172,6 +172,7 @@ namespace util
 	{
 		int GetMTU (const boost::asio::ip::address& localAddress);
 		const boost::asio::ip::address GetInterfaceAddress(const std::string & ifname, bool ipv6=false);
+		bool IsInReservedRange(const boost::asio::ip::address& host);
 	}
 }
 }