[2365] Use (un)packOptions functions in classes derived from Option.

src/lib/dhcp/option6_ia.cc

@@ -44,7 +44,7 @@ void Option6IA::pack(isc::util::OutputBuffer& buf) {
     buf.writeUint32(t1_);
     buf.writeUint32(t2_);
 
-    LibDHCP::packOptions6(buf, options_);
+    packOptions(buf);
 }
 
 void Option6IA::unpack(OptionBufferConstIter begin,
@@ -62,7 +62,7 @@ void Option6IA::unpack(OptionBufferConstIter begin,
     t2_ = readUint32( &(*begin) );
     begin += sizeof(uint32_t);
 
-    LibDHCP::unpackOptions6(OptionBuffer(begin, end), options_);
+    unpackOptions(OptionBuffer(begin, end));
 }
 
 std::string Option6IA::toText(int indent /* = 0*/) {

src/lib/dhcp/option6_iaaddr.cc

@@ -59,7 +59,7 @@ void Option6IAAddr::pack(isc::util::OutputBuffer& buf) {
     buf.writeUint32(valid_);
 
     // parse suboption (there shouldn't be any for IAADDR)
-    LibDHCP::packOptions6(buf, options_);
+    packOptions(buf);
 }
 
 void Option6IAAddr::unpack(OptionBuffer::const_iterator begin,
@@ -77,7 +77,8 @@ void Option6IAAddr::unpack(OptionBuffer::const_iterator begin,
 
     valid_ = readUint32( &(*begin) );
     begin += sizeof(uint32_t);
-    LibDHCP::unpackOptions6(OptionBuffer(begin, end), options_);
+
+    unpackOptions(OptionBuffer(begin, end));
 }
 
 std::string Option6IAAddr::toText(int indent /* =0 */) {

src/lib/dhcp/option6_int.h

@@ -104,7 +104,7 @@ public:
         default:
             isc_throw(dhcp::InvalidDataType, "non-integer type");
         }
-        LibDHCP::packOptions6(buf, options_);
+        packOptions(buf);
     }
 
     /// @brief Parses received buffer
@@ -149,7 +149,7 @@ public:
         // of clang complain about unresolved reference to
         // OptionDataTypeTraits structure during linking.
         begin += data_size_len;
-        LibDHCP::unpackOptions6(OptionBuffer(begin, end), options_);
+        unpackOptions(OptionBuffer(begin, end));
     }
 
     /// @brief Set option value.