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RFC 2236... " G# I% d! a0 H6 q4 {# ^. c& i& X) Y5 d+ p& q" Q7 h
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There is normally only one Querier per physical network. All multicast routers start up as a Querier $ U |5 t1 J" o3 `8 z) Y
on each attached network. If a multicast router hears a Query message from a router with a lower IP 9 K, k! s3 \4 M7 q8 r% Aaddress, it MUST become a Non-Querier on that network.4 G! K. w5 R% o$ f