Edit File: have_ipv4_mapped.inc
# Check if ipv4 mapped to ipv6 is available. --disable_query_log --disable_abort_on_error connect (checkcon123456789,::FFFF:127.0.0.1,root,,test); if($mysql_errno) { skip wrong IP; } connection default; disconnect checkcon123456789; --enable_abort_on_error --enable_query_log # end check