Someone just tried to spam my CAKE wiki via IPv6. The attack came from 2002:c26a:c164:0:216:cbff:feab:b3f5 which is a 6to4 address (you can tell from the beginning 2002) meaning that it corresponds to the IPv4 address of c26ac164, also known as 18.104.22.168 which is the address of some computer in Poland.
It also looks like they're on a network that's using EUI-64 based IPv6 address assignment, so the MAC address it came from is 00:16:cb:ab:b3:f5. Looking that up at the MAC Address Vendor lookup page reveals that this MAC address belongs to an Apple.
Someone's poor hacked Mac is trying to spam my wiki, or this is the computer of the hacker who's running the botnet trying to figure out why none of the spam is showing up.