When/if IPv6 is wholeheartedly embraced, then dual-stacking is obsolete. ...dual-stacking is an administrative pain and possibly the source of some really crazy

When/if IPv6 is wholeheartedly embraced, then dual-stacking is obsolete. ...dual-stacking is an administrative pain and possibly the source of some really crazy connectivity bugs. A dual-stack system is unnecessarily complex. I don't think anybody really disagrees with this but it's kind of pointless to mention because there is no alternative. IPv8 would also require a period of dual-stacking. T-Mobile is already running 99% single-stack IPv6-only so I would say the transition works; it's just a matter of doing it.