If you've heard of these terms, you probably know that the former is the older version, while IPv6 is the upgraded IP version.
Ọ bụrụ na ị nụla okwu ndị a, ị nwere ike ịmara na onye mbụ bụ okenye, ma ugbu a oge ochie, mbipute mgbe IPv6 bụ nsụgharị IP ahụ.