I'm having a similar issue verified on three BulletM2HP units for light duty sites (5-15 SMs).

Symptoms are that (with 5.6.6) almost all stations will disassociate then re-associate at the same time. Sometimes it'll just keep bouncing, sometimes it'll stabilize.

So far, going back to 5.6.4 has mitigated these symptoms. I have a ticket open with Ubiquiti support, but they've been pretty useless trying to figure out it.

General configuration is AP-WDS, AirMAX mode, 10MHz channel width, and WPA2-AES encryption. I've verified it still happens without encryption. I have not tried disabling WDS.

On 6/24/2016 11:03 AM, [email protected] wrote:
It doesn't :(

On Jun 24, 2016, at 08:00, Matt Hoppes <[email protected] <mailto:[email protected]>> wrote:

Right but in my experience turning on WDS resolves this problem.

On Jun 24, 2016, at 10:45, Ken Patrick <[email protected] <mailto:[email protected]>> wrote:

The discussion is on 5.6.5 loosing connection like I stated a few weeks back.....not about wds.

On Fri, Jun 24, 2016 at 3:30 PM Matt Hoppes <[email protected] <mailto:[email protected]>> wrote:

    What? Turning on wds makes the Mac of the CPE properly visible.

    > On Jun 24, 2016, at 09:54, Steve Barnes <[email protected]
    <mailto:[email protected]>> wrote:
    >
    > Turning on WDS is not an answer to all the worlds woes.  WDS
    can cause issue if you are using MAC authentication from the
    CPE.  Since the maces the CPE MAC transparent.
    >
    > Steve Barnes
    > Wireless Operations Manager
    > PCSWIN.COM <http://PCSWIN.COM>
    > NLBC.COM <http://NLBC.COM>
    >
    > -----Original Message-----
    > From: [email protected]
    <mailto:[email protected]>
    [mailto:[email protected]
    <mailto:[email protected]>] On Behalf Of Matt Hoppes
    > Sent: Friday, June 24, 2016 8:55 AM
    > To: Ubiquiti Users Group <[email protected]
    <mailto:[email protected]>>
    > Subject: Re: [Ubnt_users] 5.6.5 APs loosing at STAs until reboot?
    >
    > Make sure WDS is enabled on every client and the AP.
    >
    >> On Jun 24, 2016, at 07:36, Jeff Evans <[email protected]
    <mailto:[email protected]>> wrote:
    >>
    >> We're seeing the same thing, not passing packets, but
    everything else
    >> looks normal.
    >> A reboot of the AP cures it, but no way of knowing until the
    customer calls.
    >>
    >> Jeff
    >>
    >> Quoting Kevin Sullivan <[email protected]
    <mailto:[email protected]>>:
    >>
    >>> We're seeing something similar. All the stations show
    associated at
    >>> normal RSSI levels, but we lose 90% packets or more. A
    reboot brings
    >>> the users back online. Seeing the issue on 5.6.6 as well as
    6.0beta8
    >>> (figured it was worth a try). The AP I'm looking at that did
    this ten
    >>> minutes ago is an XW.
    >>>
    >>>
    >>>
    >>> I'd roll back to 5.5.x, but can't because of the vulnerability.
    >>> Anyone know of a stable 5.6.x firmware that works on DFS
    frequencies?
    >>>
    >>>
    >>>
    >>> Kevin
    >>>
    >>>
    >>>
    >>>
    >>>
    >>> From: [email protected]
    <mailto:[email protected]>
    >>> [mailto:[email protected]
    <mailto:[email protected]>] On Behalf Of Ty Featherling
    >>> Sent: Thursday, June 23, 2016 11:16 AM
    >>> To: Ubiquiti Users Group
    >>> Subject: Re: [Ubnt_users] 5.6.5 APs loosing at STAs until
    reboot?
    >>>
    >>>
    >>>
    >>> Same here. Either all stations are dropped until reboot or
    all RX
    >>> rates crash to 6.5 until the station is kicked or AP is
    rebooted.
    >>> Maddening. I have them all stable but it took different FW
    >>> combinations each time.
    >>>
    >>>
    >>>
    >>> -Ty
    >>>
    >>>
    >>>
    >>>
    >>>
    >>>
    >>>
    >>>
    >>> -Ty
    >>>
    >>>
    >>>
    >>> On Thu, Jun 23, 2016 at 12:33 PM, Tekwav Lists
    <[email protected] <mailto:[email protected]>> wrote:
    >>>
    >>> Same here.  I show that the STA's are connected, but no data
    passing
    >>> nor can I get in the STA's GUI.  This was a major issue a
    month or
    >>> so ago for me but it's been quiet with no recent issues once
    I moved
    >>> the offending AP's to non-DFS bands.
    >>>
    >>>
    >>>
    >>> JJ
    >>>
    >>>
    >>>
    >>> On Thu, Jun 23, 2016 at 11:33 AM, Rory Conaway
    >>> <[email protected] <mailto:[email protected]>> wrote:
    >>>
    >>> We haven’t nailed it down to DFS but yes and it’s very random.
    >>>
    >>>
    >>>
    >>> Rory
    >>>
    >>>
    >>>
    >>> From: [email protected]
    <mailto:[email protected]>
    >>> [mailto:[email protected]
    <mailto:[email protected]>] On Behalf Of Darin Steffl
    >>> Sent: Thursday, June 23, 2016 9:16 AM
    >>> To: Ubiquiti Users Group
    >>> Subject: Re: [Ubnt_users] 5.6.5 APs loosing at STAs until
    reboot?
    >>>
    >>>
    >>>
    >>> We see that happen until the AP is rebooted but only if
    running a
    >>> dfs channel. Any other time it never happens.
    >>>
    >>> Sent from my smartphone. Please excuse any typos.
    >>>
    >>> On Jun 23, 2016 11:03 AM, <[email protected]
    <mailto:[email protected]>> wrote:
    >>>
    >>> Having that problem too...
    >>>
    >>>
    >>> On Jun 23, 2016, at 08:59, Adair Winter
    <[email protected]
    <mailto:[email protected]>> wrote:
    >>>
    >>> We keep having problems with the station showing their
    connected but
    >>> no data is moving
    >>>
    >>> On Jun 23, 2016 10:57 AM, <[email protected]
    <mailto:[email protected]>> wrote:
    >>>
    >>> Anyone else seeing XW APs running 5.6.5 loose all of their
    connected
    >>> STAs and then when you reboot the AP, they come back?
    >>>
    >>> Thanks,
    >>> Mike
    >>> _______________________________________________
    >>> Ubnt_users mailing list
    >>> [email protected] <mailto:[email protected]>
    >>> http://lists.wispa.org/mailman/listinfo/ubnt_users
    >>>
    >>> _______________________________________________
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    >>>
    >>> _______________________________________________
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    >>>
    >>> _______________________________________________
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    >>>
    >>>
    >>>
    >>>
    >>> _______________________________________________
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    >>
    >>
    >>
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