+=item display_hw_addr
+
+Returns the 'hw_addr' field, formatted as a MAC address if the
+'svc_hardware-check_mac_addr' option is enabled.
+
+=cut
+
+sub display_hw_addr {
+ my $self = shift;
+ ($conf->exists('svc_hardware-check_mac_addr') ?
+ join(':', $self->hw_addr =~ /../g) : $self->hw_addr)
+}