dev-manual: gen-tapdevs need iptables installed

Add the hint to the test setup that runqemu-gen-tapdevs will need the
iptables package installed.

(From yocto-docs rev: ca4c984006972d34aa51f05797ec8bd47dc675bb)

Signed-off-by: Simone Weiß <simone.p.weiss@posteo.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/documentation/dev-manual/runtime-testing.rst b/documentation/dev-manual/runtime-testing.rst
index b9aa6759d1..7b9345fb79 100644
--- a/documentation/dev-manual/runtime-testing.rst
+++ b/documentation/dev-manual/runtime-testing.rst
@@ -52,6 +52,8 @@ In order to run tests, you need to do the following:
          -  Be sure to use an absolute path when calling this script
             with sudo.
 
+         -  Ensure that your host has the package ``iptables`` installed.
+
          -  The package recipe ``qemu-helper-native`` is required to run
             this script. Build the package using the following command::