(PECL event >= 1.2.6-beta)
Represents Libevent's DNS base structure. Used to resolve DNS asyncronously, parse configuration files like resolv.conf etc.
Tells to read the domain and search fields from the resolv.conf file and the ndots option, and use them to decide which domains(if any) to search for hostnames that aren’t fully-qualified.
Tells to learn the nameservers from the resolv.conf file.
Tells to read a list of hosts from /etc/hosts as part of loading the resolv.conf file.
Tells to learn as much as it can from the resolv.conf file.