Accepted Manuscript PPCU: Proportional Per-packet Consistent Updates for SDNs using Data Plane Time Stamps Radhika Sukapuram, Gautam Barua PII: S1389-1286(18)31033-8 DOI: https://doi.org/10.1016/j.comnet.2019.03.009 Reference: COMPNW 6758 To appear in: Computer Networks Received date: 7 October 2018 Revised date: 1 March 2019 Accepted date: 15 March 2019 Please cite this article as: Radhika Sukapuram, Gautam Barua, PPCU: Proportional Per-packet Consistent Updates for SDNs using Data Plane Time Stamps, Computer Networks (2019), doi: https://doi.org/10.1016/j.comnet.2019.03.009 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.