/* On an IPv6 system, unless IPv6 is disabled, go round the loop up to twice,
looking for AAAA records the first time. However, unless doing standalone
testing, we force an IPv4 lookup if the domain matches dns_ipv4_lookup global.
/* On an IPv6 system, unless IPv6 is disabled, go round the loop up to twice,
looking for AAAA records the first time. However, unless doing standalone
testing, we force an IPv4 lookup if the domain matches dns_ipv4_lookup global.