Which version of GTP supports piggybacking of GTP messages? 01/21/2017 – by Mod_GuideK 0 Which version of GTP supports piggybacking of GTP messages? A. GTPv0 B. Gn-prime C. GTPv1 D. GTPv2 E. GTPv1-prime SHOW ANSWERSCorrect Answer: D Explanation/Reference: