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Wifi Clients Connect But Can't Get DHCP Lease

Created by dave. Last edited by dave, 211 days ago. Viewed 353 times. #1
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(2019-04-17)

Problem

Wifi clients connect but can't get DHCP lease from either the Fortigate or from a DHCP server on the sofware-switch-connected network. Affects WPA2-Personal and WPA2-Enterprise secured SSIDs at the same time.

Solution

Immediately:

fw-foo # execute wireless-controller restart-acd
This operation will reboot wireless controller daemon!
Do you want to continue? (y/n)y

fw-foo #

Longer term, upgrading to 5.6.x seems to make the problem go away (or at least make fewer people complain about it on the internet).

Discussion

This problem appears to manifest mostly on 5.4.x, but I've seen a few people complaining about it on 5.6.x as well.

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This is a collection of techical information, much of it learned the hard way. Consider it a lab book or a /info directory. I doubt much of it will be of use to anyone else.

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