The value of tMcPeerIPsecDiscoveryIntvl specifies the maximum duration
of the discovery interval during which a newly activated multi-chassis
IPsec tunnel-group will remain dormant while trying to contact its
redundant peer. Groups held dormant in this manner will neither pass
traffic nor negotiate security keys. This interval ends when either
the redundant peer is contacted and a master election occurs, or when
the maximum duration expires.