This module contains flag constants useful to name resolvers.
The following example demonstrates how you can use these flags in other modules:
Only return IPv4 addresses if a non-loopback IPv4 address is configured for the system. Only return IPv6 addresses if a non-loopback IPv6 address is configured for the system.
If used with v4_mapped, return all matching IPv6 and IPv4 addresses.
Determine the canonical name of the host specified in the query.
Indicate that returned endpoint is intended for use as a locally bound socket endpoint.
If the query protocol family is specified as IPv6, return IPv4-mapped IPv6 addresses on finding no IPv6 addresses.