RADIUS Attribute - Acct-Input-Packets
As per RFC 2866
This attribute indicates how many packets have been received from the port over the course of this service being provided to a Framed User, and can only be present in Accounting-Request records where the Acct-Status-Type is set to Stop. A summary of the Acct-Input-packets attribute format is shown below. The fields are transmitted from left to right.
Type (IETF Number) = 47 for Acct-Input-Packets.
Length = 6
Value = The Value field is four octets.