To re enable the network after suspended mode I found that this works: 

22:07:23-root@Seth:~$ rmmod r8169
22:11:22-root@Seth:~$ modprobe r8169

Unloading the driver and then reloading it brings the interface back up.
unplugging the cable did not, nor did any network manager commands that
I tried.

My take on this is that the driver is not properly loaded back up after
the PC has suspended. This problem must be in the kernel somehow since
pulling the driver and re-inserting it worked.

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https://bugs.launchpad.net/bugs/1725865

Title:
  Network shows Cable Unplugged

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