Empty values filled up with the index number

[omrozowicz-splunk]

There is a certain mechanic that is not entirely correct in SC4SNMP. Sometimes, from snmpwalk we get empty values, for ex.:

IF-MIB::ifAlias.1 = STRING:

In Splunk, we fill it up with the index number, so that value is not empty (as it works terribly with the SPL queries). And it makes sense in this case, so that event looks like following:

But it does the same thing in the case of for ex. MAC address, and that's rather confusing than helpful: