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: 4a688fb991282bf606f080d748f5290d988e4354)

Signed-off-by: Simone Weiß <simone.p.weiss@posteo.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/documentation/dev-manual/runtime-testing.rst b/documentation/dev-manual/runtime-testing.rst
index be1e8c02e5..1a2e9ec4fe 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::