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When deciding whether to return a gratuitous Route Reply in this way , a node MAY factor in additional information beyond the fact that it was able to overhear the packet . " MAY 5 , 2006 - - A battle is brewing on the board of America 's Health Insurance Plans ( AHIP ) over legislation the Senate is scheduled to consider May 9 that would permit small businesses to bypass state insurance mandates.While AHIP officially has taken no position on the bill ( S 1955 ) , its president Karen Ignagni has been pushing members who oppose the measure to find a way to support it in order to curry favor with Senate Health , Education , Labor and Pensions Chairman Michael B. Enzi , R-Wyo ., the bill 's sponsor . However , an authentication service MAY sign a request containing a TEL URI in the From header field . Further , additional service-specific events MAY trigger a spontaneous Update request .