What is an IGMPv3 Router's initial current state for a multicast group?

Hi,
      I have a query regarding the IGMPv3/MLD Router behaviour. In
IGMPv3/MLDv2, the action of a router on receiving a report message for a
particular Group depends on the router's current state for the group at
the time of receiving the report, as defined in section 6.4 of RFC 3376.
Now what should be a router's initial current state for a group when it
has received the first report for the group, lets say a router comes up
afresh and receives the first report message for a group G1 with filter
mode TO_EX(NULL). Now it has to consider some initial current state for
the group and then based on that it has to take an action for the
TO_EX(NULL) report. 

My question is what should be a router's initial current state for a
group. I feel it should be INCLUDE(NULL), please advise.

-- 
Suvendu Mozumdar.
QA Architect.
Ixia Technologies Pvt. Ltd
9th Floor, Infinity Tower II
Sector V, Saltlake.
Kolkata 700091.
INDIA.
Mob : +919874081221

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