I turned on ipv6 logging months ago and the ipv6 probes failed to happen other than local traffic my isp filters everything except ipv6 icmp.
As it was time for a new isp and they have already began. That is without entries in dns zone files.
From 2001:0500:0013:0000:0000:0000:0000:0046 - 332 packets To 2001:x - 332 packets Service: 32916 (tcp/32916) - 6 packets Service: 33610 (tcp/33610) - 6 packets Service: 34050 (tcp/34050) - 6 packets Service: 34130 (tcp/34130) - 7 packets Service: 34172 (tcp/34172) - 7 packets Service: 34262 (tcp/34262) - 6 packets
I am happy to report that the zoo has partial ipv6 access although nothing is yet configured.