7dd1f932c1
I was trying to debug why this test is working locally but failing in CI. While doing so I made some small changes to allow running it with set -e. It turns out the problem is that find_iface does not return anything in Jenkins, so all following tests fail with obscure error messages. To handle this case exit early if $eth is empty. Reviewed By: lwhsu Differential Revision: https://reviews.freebsd.org/D29340