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

Reforger

Level 1

7 points

Oct 31, 2013 8:38 AM in response to Reforger

Just to say, network has been rock solid since and has come back up perfectly after every sleep/wake so it's definitely done the trick for me (touch wood).

slooptb

Level 1

0 points

Jan 7, 2016 9:46 PM in response to justiceac

Thank you sir, I've been having this issue for ages and had to have my provider reset my router remotely. Even Apple support couldn't help me.

Thanks!!!!!!!

fcopello

Level 1

8 points

Jun 16, 2016 5:19 PM in response to halear0

I changed the DHCP lease time in my router to 60 seconds and IPv6 from Automatic to Local in Mac, its seems to have solved. I'm not using static IP.

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Have to constantly renew DHCP lease