Anil Ambani, vice chairman and managing director of Reliance Industries (RIL), has shot off another letter to board members demanding full discussion on shareholding in Reliance Infocomm at the December 27 meeting.In the second letter to the board members since December 6, Anil is understood to have expressed concern that despite RIL being the largest equity holder in Reliance Infocomm, the changes in equity pattern were not brought before RIL. The issue is likely to be raised at the December 27 meeting in Mumbai, which has essentially been called to discuss buyback of Reliance shares from the market.