CREATE TABLE test.ipv4_test ( ipv4_ IPv4) ENGINE = Memory 0.0.0.0 00 8.8.8.8 08080808 127.0.0.1 7F000001 192.168.0.91 C0A8005B 255.255.255.255 FFFFFFFF < 127.0.0.1 0.0.0.0 < 127.0.0.1 8.8.8.8 > 127.0.0.1 192.168.0.91 > 127.0.0.1 255.255.255.255 = 127.0.0.1 127.0.0.1 euqality of IPv4-mapped IPv6 value and IPv4 promoted to IPv6 with function: 1 CREATE TABLE test.ipv6_test ( ipv6_ IPv6) ENGINE = Memory :: 00000000000000000000000000000000 :: 00000000000000000000000000000000 ::ffff:8.8.8.8 00000000000000000000FFFF08080808 ::ffff:127.0.0.1 00000000000000000000FFFF7F000001 ::ffff:193.252.17.10 00000000000000000000FFFFC1FC110A 2001:db8:ac10:fe01:feed:babe:cafe:f00d 20010DB8AC10FE01FEEDBABECAFEF00D ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF < 127.0.0.1 :: < 127.0.0.1 :: < 127.0.0.1 ::ffff:8.8.8.8 > 127.0.0.1 ::ffff:193.252.17.10 > 127.0.0.1 2001:db8:ac10:fe01:feed:babe:cafe:f00d > 127.0.0.1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff = 127.0.0.1 ::ffff:127.0.0.1