Quick query from 3261 section 12.2 "Requests within a Dialog"..<<SNIP>>Requests
within a dialog MAY contain Record-Route and Contact header fields. However,
these requests do not cause the dialog's route set to be modified, although
they may modify the remote target URI. Specifically, requests that are not
target refresh requests do not modify the dialog's remote target URI, and
requests that are target refresh requests do.<<END>>Since the routeset is
already established, why would the Record-Route headers be allowed in new
requests?-will
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