diff --git a/src/internet/model/arp-cache.cc b/src/internet/model/arp-cache.cc
index 5f1b299..9e9b9ae 100644
--- a/src/internet/model/arp-cache.cc
+++ b/src/internet/model/arp-cache.cc
@@ -282,6 +282,10 @@ ArpCache::PrintArpCache (Ptr<OutputStreamWrapper> stream)
         {
           *os << " DELAY\n";
         }
+      else if (i->second->IsPermanent ())
+	{
+	  *os << " PERMANENT\n";
+	}
       else
         {
           *os << " STALE\n";