[c-nsp] SNMP bug?

[edwinlok at gmail.com]

I have been polling an ATM subinterface all this while with no problems at all.. 
until recently when the router starts responding "No Such Instance currently 
exists".

Could someone help to confirm if this is a bug which is related to CSCee18679 
and CSCef79968?

I'm using 12.0(31)S. Is this fixed in 12.0(31)S1?

Is there any other workaround besides reloading the router?

Thanks

Rgds
Edwin

P.S. here's the output from various snmpX commands to try polling the OID that I 
require (.1.3.6.1.2.1.31.1.1.1.6.13)

# snmpwalk -v2c -c community router .1.3.6.1.2.1.31.1.1.1.6
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.1 = Counter64: 5281817692959
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.2 = Counter64: 38128701240
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.3 = Counter64: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.5 = Counter64: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.6 = Counter64: 5326328507620
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.7 = Counter64: 910263
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.10 = Counter64: 25561476943856
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.11 = Counter64: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.13 = Counter64: 25555393239908
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.15 = Counter64: 1678740
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.17 = Counter64: 1547514171
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.19 = Counter64: 11676320
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.21 = Counter64: 21262421
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.23 = Counter64: 306497229
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.25 = Counter64: 1010134
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.27 = Counter64: 294853
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.29 = Counter64: 4193770080
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.30 = Counter64: 18094729907
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.31 = Counter64: 20109152208

# snmpwalk -v2c -c community router .1.3.6.1.2.1.31.1.1.1.6.13
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.13 = No Such Instance 
currently exists

# snmpget -v2c -c community router .1.3.6.1.2.1.31.1.1.1.6.13
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.13 = No Such Instance 
currently exists

# snmpgetnext -v2c -c community router .1.3.6.1.2.1.31.1.1.1.6.11
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.13 = Counter64: 25555417031224