Index: head/sbin/ifconfig/ifieee80211.c
===================================================================
--- head/sbin/ifconfig/ifieee80211.c
+++ head/sbin/ifconfig/ifieee80211.c
@@ -1143,6 +1143,7 @@
 		cp = tp;
 	}
 	set80211(s, IEEE80211_IOC_CHANLIST, 0, sizeof(chanlist), &chanlist);
+	free(temp);
 }
 
 static void