Fei Ren Huachun Zhou Implementation and Test of PMIPv6 Dual Stack Protocol. 305-310 2012 IMIS https://doi.org/10.1109/IMIS.2012.67 https://doi.ieeecomputersociety.org/10.1109/IMIS.2012.67 conf/imis/2012 db/conf/imis/imis2012.html#RenZ12