FWIW, in this really interesting read <https://googleprojectzero.blogspot.com/2020/12/an-ios-zero-click-radio-proximity.html> about the latest vulnerability released by Project Zero, they talk about AWDL and how if this is in use (AirDrop enabled?) then you're going to get tons of jitter/packet loss.
In this way [TDM hopping between Wi-Fi Access Point and AWDL Mesh] the > device can appear to be connected to the access point whilst also > participating in the AWDL mesh at the same time. Of course, frames might be > missed from both the AP and the AWDL mesh but the protocols are treating > radio as an unreliable transport anyway so this only really has an impact > on throughput. A large part of the AWDL protocol involves trying to > synchronize the channel switching between peers to improve throughput. Dan On Sun, Nov 22, 2020 at 2:30 PM [email protected] <[email protected]> wrote: > > > On 22 Nov 2020, at 20:43, J. Hellenthal <[email protected]> wrote: > > You can supposedly still use 4.5 4.6 on Big Sur if you do the following > but I have not tested it on Little Snotch, works fine for personal software > and others ... > > codesign -dvvv littlesnitch.package name > Save the team identifier > Boot into recovery mode > Open terminal and type the following... > spctl kext-consent add <team identifier> > Reboot into normal user mode and install version 4 > > Thanks for the hint. Will have a look into it. > > > > > -- > J. Hellenthal > > The fact that there's a highway to Hell but only a stairway to Heaven says > a lot about anticipated traffic volume. > > On Nov 22, 2020, at 11:55, [email protected] wrote: > > > > On 22 Nov 2020, at 10:17, Mark Tinka <[email protected]> wrote: > > So after installing Little Snitch and basically denying "trustd" any > kind of Internet access, I have been seeing reasonably normal jitter with > Bluetooth enabled. > > I actually “saw the same” on Catalina while using little snitch. > > “Saw the same” after installing yesterday Big Sur and suddenly received a > notification “this version of little snitch is no longer supported by > macOS. It’s looks like I have to pay 25€ for a new compatible version. > > > It's not that Bluetooth stops scanning, but it's not scanning as > aggressively. So after a few minutes, there will be very high jitter when > Bluetooth scans the environment, but it would affect only a single packet. > It's easily reduced its chattiness by 99%. > > I don't have any empirical data to support the claim that Little Snitch > has anything to do with it (and I am too lazy to dig further into it), but > the reduction in jitter is massively noticeable since Little Snitch. Which > means I can now run Catalina with Bluetooth enabled and not have any wi-fi > problems. > > Just FYI, for the archives :-). > > Mark. > > Cheers, > Darwin-. > >
