Earlier quoted context omitted.
Why would they want to block IPv6 specifically?
IDK for sure, but might be harder to maintain, monitor, and block. One characteristic of v4 is it's somewhat reasonable to do a straight forward block on a range of addresses to shut down access. This is still somewhat possible with v6, but harder as there's simply a much larger portion of ip addresses that can be all over the place. It's theoretically a lot easier for anyone that wants to bypass a simple filter to g…
no its not, its easier to block IPv6 ranges than IPv4 ones.
if someone want be block my ISP, they only need a single /32 rule with v6.