diff --git a/slides/autopilot/autotest.py b/slides/autopilot/autotest.py
index 9a85ed1e..760de79c 100755
--- a/slides/autopilot/autotest.py
+++ b/slides/autopilot/autotest.py
@@ -223,7 +223,7 @@ def check_exit_status():
 def setup_tmux_and_ssh():
     if subprocess.call(["tmux", "has-session"]):
         logging.error("Couldn't connect to tmux. Please setup tmux first.")
-        ipaddr = open("../../prepare-vms/ips.txt").read().split("\n")[0]
+        ipaddr = "$IPADDR"
         uid = os.getuid()
 
         raise Exception("""
diff --git a/slides/k8s/netpol.md b/slides/k8s/netpol.md
index 54c8f0a8..2bae8155 100644
--- a/slides/k8s/netpol.md
+++ b/slides/k8s/netpol.md
@@ -371,6 +371,23 @@ troubleshoot easily, without having to poke holes in our firewall.
 
 ---
 
+## Cleaning up our network policies
+
+- The network policies that we have installed block all traffic to the default namespace
+
+- We should remove them, otherwise further exercises will fail!
+
+.exercise[
+
+- Remove all network policies:
+  ```bash
+  kubectl delete networkpolicies --all
+  ```
+
+]
+
+---
+
 ## Protecting the control plane
 
 - Should we add network policies to block unauthorized access to the control plane?