Portraits of Kimberly Claffy the Postel Award winner 2017 at IETF 100, Singapore, 14/11/2017. December 8, 2017 5000 × 3084 Portraits of Kimberly Claffy the Postel Award winner 2017 at IETF 100, Singapore, 14/11/2017. Portraits of Kimberly Claffy the Postel Award winner 2017 at IETF 100, Singapore, 14/11/2017.