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Level 1

109 points

Have to constantly renew DHCP lease

Using a Mac Pro and Lion. Recently updated to 10.7.3, but have no idea if the update is related to this problem.

My internet connection drops constantlly. I have to "renew DHCP lease" about every 10 or 15 minutes, and certainly when I restart. I've tried using a manual ip, which does work for a while. Also changed my DNS to Google's public DNS (8.8.8.8 and 8.8.4.4). I also restart the modem and router every time: turning them all off and then turning them back on one at a time, when they are fully booted up.

Also downloaded some software that is supposed to find the "DNS changer virus" -- it reported that I did not have that virus.

Mac Pro, Mac OS X (10.7.2), MacPro2,1 Quad-Core Intel Xeon

Posted on Mar 4, 2012 3:16 PM

48 replies

sguneri

Level 1

4 points

Sep 19, 2016 4:06 PM in response to triglyph

I have this really frustrating problem on my mid-2014, 13" pro currently running 10.11.6. Not 100% sure but I feel like it started after updating to 10.11.3 or sth and I wasn't lucky to find a solution after applying all the tips mentioned here, receiving over 5 support calls and finally visiting the genius (?) bar -- they have "tested" my device for 6 days and I was later told that it works like a charm! The problem occurs everywhere: at home, work, cafes, airports, etc; sometimes every second and sometime once a month; while other Wi-Fi devices including my iPhone don't have any issue with the connection. I will visit the genius bar tomorrow again hoping that they will come up with a solution and in case they cannot, I'm afraid I may punch this glorious looking retina screen so hard and definitely refrain from even thinking of getting any other Apple device after all these years with my iPod, iPhone, iPad and this goddamned Macbook!!!

Nov 12, 2016 4:19 PM in response to triglyph

For anyone having these issues, I highly recommend OSXDaily's fix for wifi issues. You can view it here: http://osxdaily.com/2016/09/22/fix-wi-fi-problems-macos-sierra/

They also have versions for previous versions of OS X / MacOS.

I've used this fix on several machines for customers, and it has fixed the weirdest wifi problems that you would think had no connection to plists. I've also used it on my own machine, and it not only fixed weird issues with a 3rd party program after my upgrade to MacOS Sierra, it also has sped up my browsing tremendously.

Dec 2, 2016 6:13 PM in response to triglyph

I was having issues with the Sierra upgrade, it would work elsewhere but at home always dropping - requiring the renewal of the DHCP lease every 10 seconds. After hours of online work (doing the fixes based on this thread and others) and a trip to the Apple Store where they scratched their heads, I updated my router's (Netgear) firmware which seemed to do the trick. Knock on wood, it has only been 6 hours since 🙂

Have to constantly renew DHCP lease