<div dir="ltr">Look for a packet loop on the interface. Use tcpdump on the interface to see if there are excess packets being generated from somewhere. There are numerous things that can blow up a LAN. The most common being that a switch port is wired to loop back into the LAN.<div><br></div><div>-Matt</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Oct 16, 2016 at 9:17 AM, Justin Sherrill <span dir="ltr"><<a href="mailto:justin@shiningsilence.com" target="_blank">justin@shiningsilence.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On Sun, Oct 16, 2016 at 11:49 AM, Richard Nyberg <<a href="mailto:rnyberg@murmeldjur.se">rnyberg@murmeldjur.se</a>> wrote:<br>
> Thanks!<br>
><br>
> Here are some more datapoints.<br>
<br>
</span>I think the only constant at this point is the internal interface on<br>
the DragonFly system. If you hook the em0 interface that's currently<br>
internal on the DragonFly machine up to your Internet link (i.e.<br>
reverse which interface is internal or external), does it still<br>
perform badly?<br>
<br>
If it doesn't work well, then that interface is bad. I'd be<br>
surprised, cause I've seen network ports go bad very rarely, but it's<br>
possible. Plus, I don't have any other ideas.<br>
</blockquote></div><br></div>