Sleep and an Ethernet connection

[Tom H]

On Sat, Mar 28, 2015 at 1:01 AM, Phil <phil_lor at bigpond.com> wrote:
>
> One annoying problem that I've yet to resolve is the dropping of the
> Ethernet connection after waking from sleep. I occasionally had the same
> problem with a wireless connection on my laptop but that was easily overcome
> by pressing the "connect" button. There isn't a "connect" button in the
> "Active connections" box after waking on the desktop computer. The "Active
> connections" box is blank until the computer is rebooted.
>
> A Google search has shown that this is a common problem. A few workarounds
> have been offered, however, none have worked for me. How have other list
> members overcome this problem?

What were the workarounds?

If you're using NM, is its dispatcher running?

Whether you're using NM or ifupdown, are the up, pre-up, etc scripts
present and executable and are they launched at wake-up?