The reason we turn off IPv6 is basically that some Mac's were unable to get a IPv4 address when they had V6 enabled.
It has been a problem for a while, and at this point it is just one of the many issues we have with Apple devices in general, not just on 10.10 We do have Cisco, but do not have V6 enabled everywhere. No link to the page as it is an internal document. That is why I copied the text and put it in the email. ------------------------ Walter Reynolds Principal Systems Security Development Engineer Information and Technology Services University of Michigan (734) 615-9438 On Tue, Mar 3, 2015 at 8:26 AM, Frans Panken <[email protected]> wrote: > Hi Walter, > Good suggestions. What is the reason you suggest to turn off IPv6 on > Wi-Fi? > Do you have Cisco (we have a TAC case where IPv6 does not work well)? I > wonder which Wi-Fi degradations you prevent by turning off IPv6. Can you > explain (link to a page)? > -Frans > > Walter Reynolds schreef op 03/03/15 om 13:49: > > We also have seen a huge rise in issues. 10.10.3 which is being tested > right now seems better, but not a solution. Here is some of what we tell > folks who have issues. The firts set removes all network settings, but > seems to help the most. > > > *REMOVE MACHINE NETWORKING PREFERENCES* > > 1. Click on the WiFi icon in the top menu bar and select: *Turn Wi-Fi > Off*. > 2. Click anywhere on the desktop. > 3. Click on *Go* on the top of your screen. > 4. Choose *Computer* > 5. Choose your hard drive (it may be named "Macintosh HD") > 6. Choose *Library* > 7. Choose *Preferences* > 8. Choose *SystemConfiguration* > 9. If the following items exist in the SystemConfiguration folder, > drag them to the trash. (Note: They may not all exist.) > com.apple.airport.preferences.plist > com.apple.eapolclient.plist > com.apple.network.eapolclient.configuration.plist > com.apple.network.identification.plist > com.apple.wifi.message-tracer.plist > NetworkInterfaces.plist > preferences.plist > 10. Restart your computer. > > *NOTE: *After doing this step, you will need to rejoin any WiFi networks > you have at home, etc. > > > *ADJUST WIFI NETWORK WAKE SETTINGS * > > 1. Open the *Energy Saver* system preferences (It can be found at *Apple > Menu > System Preferences... > Energy Saver*) > 2. If using a Macintosh laptop, click on the *Power Adapter* button. > 3. Uncheck *Wake for Wi-Fi network access*. > > > > *ADJUST AIRDROP SETTINGS* (NOTE: This step is only for newer Macs having > the awdl0 interface) > > 1. In the bottom dock, click on the *Finder* icon. > 2. In the Finder window that appears, on the left side click on > *AirDrop*. > 3. Look at the bottom of the right side of the AirDrop window. > 4. Look for the pulldown labeled: *Allow me to be discovered by* > 5. If the pulldown is there, select *No One*. > > *NOTE*: If the pulldown is not at the bottom of the AirDrop window, your > machine does not have the awdl0 interface. You can skip this step. > > > *TURN OFF IPv6 NETWORKING* > > 1. Open the *Terminal* application. (It can be found at *Applications > > Utilities > Terminal*) > 2. Type the following command: networksetup -setv6off Wi-Fi > 3. Hit return on the keyboard. (You won't see any visible change, but > the command has been executed.) > 4. Close the Terminal window. > > > > ------------------------ > Walter Reynolds > Principal Systems Security Development Engineer > Information and Technology Services > University of Michigan > (734) 615-9438 > > On Mon, Mar 2, 2015 at 8:52 AM, Kees Pronk <[email protected]> wrote: > >> Just wondering if anyone can share opinions / experience on this one. >> There is a big discussion at : >> https://discussions.apple.com/thread/6601963?tstart=0 >> Our University has seen a steep rise on connectivity issues since 10.10.2 >> was released, both on our open SSID as on eduroam. >> >> Sincerely, Kees Pronk >> >> Disclaimer ( http://www.avans.nl/over-avans/e-mail-disclaimer ) >> >> ********** >> Participation and subscription information for this EDUCAUSE Constituent >> Group discussion list can be found at http://www.educause.edu/groups/. >> > > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found at > http://www.educause.edu/groups/. > > > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found at > http://www.educause.edu/groups/. > > ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
