Network connection won't stay connected

asked 2016-02-23 01:44:57 -0500

Yashar gravatar image

I'm testing a fresh installed fedora 23 workstation on a Lenovo B5080 in my office. The network works fine at first (ping request works) but after sometimes the ping request starts to error Destination Host Unreachable.

68 bytes from ecmp_seq=2744 ttl=47 time=127 ms
From icmp=6221 Destination Host Unreachable

(which is the workstation IP)

I have to turn off & on my wireless card every time to make it work. Later it was using DHCP and on every restart I had to kill dhclient every time to make it work.

I've made an static IP address for the station but it still get disconnected every now and then (no need to kill dhclient anymore).

I've checked routes, iptable and everything seems alright but or arp response I have this:

gateway ( at <incomplete> on wlp9s0

(I checked arp before getting disconnected and it had the right MAC Address.)

I have no clue why is this happening but I guess my workstation is somehow corrupting its arp table... Any idea what is going on?

P.S. (I tested this on other networks and it has the same problem)

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Which laptop make and model? and which wifi module does it have? Update your question above with more details. Running lshw as root should give you a list of all your hardware components. From your description, it sounds like a Broadcom wifi module. They’re known to have pretty bad firmware and be very unreliable and there isn’t much you can do about it. I used to struggle with the same kind of problem until I did the ~15$ upgrade to a Intel wifi module.

Aeyoun gravatar imageAeyoun ( 2016-02-23 02:23:26 -0500 )edit