The value of tmnxBsxTransPrefPolicyIPv6EntCnt indicates the
total number of valid IPv6 entries within this transit
prefix policy.
A valid entry is defined as an entry in the tmnxBsxTransPrefTable
with matching tmnxBsxAaGrpPartIndex and tmnxBsxTransPrefPolicyId
indices plus non-default values specified for the
tmnxBsxTransPrefEntrySubscriber, and tmnxBsxTransPrefEntrySubAddr
or tmnxBsxTransPrefEntryNetAddr objects.