diff --git a/README.md b/README.md
index c9790d1..f03fd0b 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ Scan Domain (example.com)
 Nameserver address (127.0.0.1)
 Default username (bob.user)
 ```
+**Important:** While a hostname may be used in lieu of an IP address for the DNS server used by this script, it is not advised. If this hostname fails to resolve, it may have unintended consequences that could be avoided by using an IP address. There may be an update at a later time to enforce a sanity check to prevent this, but this is not yet in place.
 
 Once done, all hostnames in the DNS zone should be available for SSH/Telnet/RDP by a tab-completable alias of just the hostname (in new shell sessions).