The value of tmnxVdoIfScte30AdSrvrTblLstChngd indicates the sysUpTime
at the time of the last modification to tmnxVdoIfScte30AdSrvrTable by
adding, deleting an entry or change to a writable object in the table.
If no changes were made to the table since the last re-initialization
of the local network management subsystem, then this object contains
a zero value.