[mrtg] graphing IPv6 only traffic via mrtg on linux

[R Dicaire]

Hi folks...I'm trying to graph IPv6 only traffic using snmp as source
data. I tried using the OIDs

ipSystemStatsInReceives.ipv6 and ipSystemStatsOutRequests.ipv6 from
IP-MIB but this doesnt seem to be working as there has been no
movement of the graph in 12 hours though there's definitely been IPv6
traffic, and I see the counters increasing.
Can this not be achieved via snmp? Am I using incorrect OIDs?

Here my mrtg target:

Target[rdb_ipv6]:
.1.3.6.1.2.1.4.31.1.1.3.2&.1.3.6.1.2.1.4.31.1.1.20.2:public at rdb
MaxBytes[rdb_ipv6]: 1250000
Title[rdb_ipv6]: IPv6 Traffic Analysis - rdb
PageTop[rdb_ipv6]: <H1>IPv6 Traffic Analysis - rdb</H1>

-- 
aRDy Music and Rick Dicaire present:
http://www.ardynet.com
http://www.ardynet.com:9000/ardymusic.ogg.m3u