diff --git a/tests/full-test b/tests/full-test
index 2f9876b9..5e69717a 100755
--- a/tests/full-test
+++ b/tests/full-test
@@ -77,7 +77,7 @@ if test $? != 0;then
 	stop
 fi
 
-ping6 -w 5 fd91:6d87:7341:db6a::
+ping6 -w 5 fd91:6d87:7341:db6a::1
 if test $? != 0;then
 	kill $PID
 	echo "Cannot ping the IPv6 of ocserv"
diff --git a/tests/radius-test b/tests/radius-test
index cd49f3c5..6f6518c3 100755
--- a/tests/radius-test
+++ b/tests/radius-test
@@ -80,12 +80,12 @@ if test $? != 0;then
 	stop
 fi
 
-#ping6 -w 5 fd91:6d87:7341:db6a::
-#if test $? != 0;then
-#	kill $PID
-#	echo "Cannot ping the IPv6 of ocserv"
-#	stop
-#fi
+ping6 -w 5 fd91:6d87:7341:db6a::1
+if test $? != 0;then
+	kill $PID
+	echo "Cannot ping the IPv6 of ocserv"
+	stop
+fi
 
 echo "UserKnownHostsFile ./known-hosts.tmp" >config.tmp
 printf "#\!/bin/sh\n" >echo-admin.tmp