And the good news about this is "normal people" don't have a clue what you're talking about when mentioning ipv4 or ipv6. Tell them, "We're about to run out of IP addresses!" and they'll blink at you. Tell them, "No! PANIC! IPV4 IS ALL FILLT UP!" and they will call for some friendly people to take you to a padded room. Tell them, "Oh, and we have a problem with programs that use a two digit year instead of a four digit year" and they will build disaster shelters.