The ifIndex used in conjunction with the Virtual Router Index
(VRID) etsysLsnatVserverVrrpVrid to describe the associated
VRRP. A properly configured entry will also include a
non-default entry for the VRID (etsysLsnatVserverVrrpVrid).
A transitioning of the VRRP defined by this entry and
etsysLsnatVserverVrrpVrid to a state of anything but 'master'
will result in the Virtual server etsysLsnatVserverOperStatus
transitioning to a state of 'down'. A non zero value must
also be set in etsysLsnatVserverVrrpVrid for this entry to be
configured properly. A value of '0' in
etsysLsnatVserverVrrpInterface and etsysLsnatVserverVrrpVrid
indicates that there is no VRRP associated with this Virtual
server.