IS_IPV4_MAPPED
Syntax
IS_IPV4_MAPPED(expr)
Description
Returns 1 if a given a numeric binary string IPv6 address, such as returned by INET6_ATON(), is a valid IPv4-mapped address, otherwise returns 0.
MariaDB starting with 10.5.0
From MariaDB 10.5.0, when the argument is not INET6, automatic implicit CAST to INET6 is applied. As a consequence, IS_IPV4_MAPPED now understands arguments in both text representation and binary(16) representation. Before MariaDB 10.5.0, the function understood only binary(16) representation.
Examples
SELECT IS_IPV4_MAPPED(INET6_ATON('::10.0.1.1')); +------------------------------------------+ | IS_IPV4_MAPPED(INET6_ATON('::10.0.1.1')) | +------------------------------------------+ | 0 | +------------------------------------------+ SELECT IS_IPV4_MAPPED(INET6_ATON('::ffff:10.0.1.1')); +-----------------------------------------------+ | IS_IPV4_MAPPED(INET6_ATON('::ffff:10.0.1.1')) | +-----------------------------------------------+ | 1 | +-----------------------------------------------+
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