case OPT_UDP: return("Use UDP protocol when communicating with server.");
case OPT_USERNAME: return "Username to use for SASL authentication";
case OPT_PASSWD: return "Password to use for SASL authentication";
case OPT_UDP: return("Use UDP protocol when communicating with server.");
case OPT_USERNAME: return "Username to use for SASL authentication";
case OPT_PASSWD: return "Password to use for SASL authentication";