Adapter em0 link state changing down/up on 11.1

[Ernie Luzar]

Hello List;

Running 11.1 and em0 is a Intel Pro/1000.
I keep getting these messages
Kernel: em0: Link state changed to Down
Kernel: em0: Link state changed to Up

This happens 3 to 8 times during a 24 hour period.
em0 is connected to the public internet and this down/up cycle 
disconnects all browser connections that are active.

What can I do to fix this?