-a, --listen-address=<ipaddr>
Listen on the given IP address(es). Both
--interface
and
--listen-address
options may be given, in which case the set of both interfaces and
addresses is used. Note that if no
--interface
option is given, but
--listen-address
is, dnsmasq will not automatically listen on the loopback
interface. To achieve this, its IP address, 127.0.0.1, must be
explicitly given as a
--listen-address
option.