It's on a weekly cycle, with peaks presumably on the weekends. Maybe more home internet connections than workspace internet connections are IPv6, so there is an

It's on a weekly cycle, with peaks presumably on the weekends. Maybe more home internet connections than workspace internet connections are IPv6, so there is an uptick in registered IPv6 connections when people are at home. (Note how the trough between Dec 24th and 31st is also significantly more shallow than the usual one.)