IF-MIB requirement and modification

Hi All,
           I have a specific requirement regarding the IF-MIB.
 As per code base Net-SNMP-5.4.2.1  I have come to know that IF mib 
display all "interface" present on the Machine.
Like loopback [lo]       as index ->1
        ethernet0 [eth0]   as index ->2
       ethernet1 [eth1]    as index ->3

As per my requirement I need to read only "ONE interface "eth0" as index 
1" and this change should reflect in IP MIB available with net-snmp-5.4.2.1

Does anyone could suggest what and  where (if possible), Does I need to 
change ?
Any suggestion would Great Help for Me.

Rgds,
Sanjay

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