When you update the broadcom-wl drivers on Mageia5

...and the network goes down upon the installation of the brand new kernel module.

Don't Panic!

It's super-easy to recover, unless you make strange manouvers.

I simply follow these simple steps:

• Stop the network
• kill the wlsupplicant (if there's more than one, kill all instances associated with your wireless network device)
• Start the network

It works flawlessly for me and saves me a reboot.

Hope it helps.