What would be the behavior of UA when 200 OK received which is not matching
the dialog

"200OK received by UA with different Call-id which is not in context"


I see the following snippet in RFC 3261 which says UA should create
dialog. Wont this end up in acknowledging the hacking?

  If the dialog identifier in the 2xx response matches the dialog
   identifier of an existing dialog, the dialog MUST be transitioned to
   the "confirmed" state, and the route set for the dialog MUST be
   recomputed based on the 2xx response using the procedures of Section
   12.2.1.2.  *Otherwise, a new dialog in the "confirmed" state MUST be
   constructed using the procedures of Section 12.1.2.*


does this mean UA should generate ACK & immediately followed by BYE should
be triggered?


-- 
Thanks
Prakash K
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