diff --git a/README.md b/README.md
index d26224d..e02e892 100644
--- a/README.md
+++ b/README.md
@@ -114,7 +114,12 @@ Assuming you have nixpkgs checked out in a peer directory of this one,
 
     NIX_PATH=nixpkgs=../nixpkgs:$NIX_PATH ./run-tests.sh
 
-## Diagnosing unexpectedly large images
+Some of the tests require the emulated upstream connection to be running.
+
+
+## Troubleshooting
+
+### Diagnosing unexpectedly large images
 
 Sometimes you can add a package and it causes the image size to balloon
 because it has dependencies on other things you didn't know about. Build the
diff --git a/tests/support/ppp-server/README.md b/tests/support/ppp-server/README.md
index 41b92f0..5b022b4 100644
--- a/tests/support/ppp-server/README.md
+++ b/tests/support/ppp-server/README.md
@@ -3,7 +3,7 @@
 To test a router, we need an upstream connection. In this directory,
 find
 
-* run.sh, a script that will start a RouterOS image in qemu.
+* chr.sh, a script that will start a RouterOS image in qemu.
   Login when prompted, username is "admin", blank password
 * routeros.config, a set of commands you can feed into routeros
   to set up PPPoE