diff --git a/ex-1_iptables.adoc b/ex-1_iptables.adoc
index 62c7016..7cdb4f4 100644
--- a/ex-1_iptables.adoc
+++ b/ex-1_iptables.adoc
@@ -53,9 +53,10 @@ lo:     flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
 ---- 
 
-
-CAUTION: inet ***172.21.0.2***  netmask 255.255.0.0  broadcast 172.21.255.255
-
+.TIP
+****
+inet ***172.21.0.2***  netmask 255.255.0.0  broadcast 172.21.255.255
+****
 
 == Find live hosts