[2772] The private DHCPv4 opts (code > 224) are not standard opts.

src/lib/dhcp/libdhcp++.cc

@@ -163,9 +163,9 @@ LibDHCP::isStandardOption(const Option::Universe u, const uint16_t code) {
               code == 126 ||
               code == 127 ||
               (code > 146 && code < 150) ||
-              (code > 177  && code < 208) ||
+              (code > 177 && code < 208) ||
               (code > 213 && code <  220) ||
-              (code > 221 && code < 224))) {
+              (code > 221 && code < 255))) {
                 return (true);
             }
 

src/lib/dhcp/tests/libdhcp++_unittest.cc

@@ -643,7 +643,10 @@ TEST_F(LibDhcpTest, isStandardOption4) {
                                           187, 188, 189, 190, 191, 192, 193, 194, 195,
                                           196, 197, 198, 199, 200, 201, 202, 203, 204,
                                           205, 206, 207, 214, 215, 216, 217, 218, 219,
-                                          222, 223 };
+                                          222, 223, 224, 225, 226, 227, 228, 229, 230,
+                                          231, 232, 233, 234, 235, 236, 237, 238, 239,
+                                          240, 241, 242, 243, 244, 245, 246, 247, 248,
+                                          249, 250, 251, 252, 253, 254 };
     const size_t unassigned_num = sizeof(unassigned_codes) / sizeof(unassigned_codes[0]);
 
     // Try all possible option codes.