diff -purN ifplugd-0.28.orig/conf/ifplugd.conf ifplugd-0.28/conf/ifplugd.conf
--- ifplugd-0.28.orig/conf/ifplugd.conf	2003-12-12 01:58:43.000000000 +0800
+++ ifplugd-0.28/conf/ifplugd.conf	2022-12-06 16:37:58.939672090 +0800
@@ -30,7 +30,7 @@
 # according to /proc/net/dev. Note that the list of interfaces
 # appearing in /proc/net/dev may depend on which kernel modules you
 # have loaded.
-INTERFACES="eth0"
+INTERFACES="eth0 eth1"

 # Additional parameters for ifplugd.
 # (Run "ifplugd -h" for further information.)