There has traditionally a mentality of disabling IPv6 or otherwise ignoring it for simplicity. That has changed pretty substantially, though, in the past few years, but I’d like to get concensus.
I’d like to see our infrastructure be at least dual stacked, if not IPv6-native with IPv4 in the spots we need it (e.g. external VIPs). Retrofitting a v4-only infrastructure up to v6 is very not-fun.