Comment 1 for bug 1633845

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Quentin (t-quentin) wrote :

Same issue on ubuntu-gnome 16.10 after resuming from sleep.

Network controller: Broadcom Limited BCM43602 802.11ac Wireless LAN SoC (rev 01)
Hardware: Dell XPS 9550

It is required to restart the network manager.

There was the same issue in Ubuntu 16.04 6/7 months ago and it was fixed in an update.