change the gateway IP to the floating one

howto/new-machine-cymru.md

@@ -577,7 +577,7 @@ documentation](https://www.dell.com/support/manuals/en-ca/idrac7-8-lifecycle-con
 To change the IP address of the iDRAC itself, you can use the `racadm
 setniccfg` command:
 
-    racadm setniccfg -s 172.30.140.4 255.255.255.0 172.30.140.1
+    racadm setniccfg -s 172.30.140.13 255.255.255.0 172.30.140.101
 
 It takes a while for the changes to take effect. In the [latest
 change][] we actually lost access to the RACADM interface after 30