diff --git a/miniupnpd/miniupnpd.conf b/miniupnpd/miniupnpd.conf
index 36040f4..75e911f 100644
--- a/miniupnpd/miniupnpd.conf
+++ b/miniupnpd/miniupnpd.conf
@@ -6,7 +6,8 @@
 #ext_ip=
 
 # LAN network interfaces IPs / networks
-# There can be multiple listening IPs for SSDP traffic
+# There can be multiple listening IPs for SSDP traffic, in that case
+# use multiple 'listening_ip=...' lines, one for each network interface.
 # It can be IP address or network interface name (ie. "eth0")
 # It is mandatory to use the network interface name in order to enable IPv6
 # HTTP is available on all interfaces.