ByteBufUtils.writeMandatory(body, specObj.getRouterId(), "RouterId");
ByteBufUtils.writeMandatory(body, specObj.getInterfaceId(), "InterfaceId");
ByteBufUtils.writeMandatory(body, specObj.getRouterId(), "RouterId");
ByteBufUtils.writeMandatory(body, specObj.getInterfaceId(), "InterfaceId");