Fix for the no DHCP ethernet on wake from sleep problem

paulatmodaco · **Joined:** Thu Jul 03, 2008 9:33 am **Posts:** 230

Here's how I fixed it:

- Download and install sleepwatcher from here (install the main package and the startup item)
- Drop to a terminal
- type 'cd ~'
- type 'nano .wakeup'
- Paste in the following (putting your password in of course):

Code:

#!/bin/bash
  echo "yourpasswordhere" | sudo -S ipconfig set en0 BOOTP
  sudo ipconfig set en0 DHCP

- Press Ctrl-X then Y to save
- type 'chmod +x .wakeup'

Reboot.

Hey presto, problem solved

P

[Thanks to this topic on IM for the help!]

MrHali · **Posted:** Fri Jul 25, 2008 10:39 pm

Thanks for this fix. I changed my solution alittle bit because I didn't want to have my password exposed in plaintext sitting directly on my home directory or mess around with the sudoers file and rights either. So, what I did was log in as the system administrator and appended the commands directly to the system wakeup script that runs at /etc/rc.wakeup

Simply log in as your system admin, go to Terminal in Applications/Utilities and type:

sudo nano /etc/rc.wakeup

enter your admin password then scroll to the bottom of the file by pressing CTRL+V several times or Fn+Down Arrow and then add these 2 lines at the bottom of the script:

ipconfig set en0 BOOTP
ipconfig set en0 DHCP

and then CTRL+X and Y to save your changes. That's it. Works great.

Tulisan · **Joined:** Fri Jul 25, 2008 9:04 am **Posts:** 46

Ok, I don't know how to revert paul's guide since it still doesn't work on my setup (network is set to automatic). Would your instruction conflict with paul's if I do both? how do i uninstall sleepwatcher? (sorry, osx noob)

markosdia · **Joined:** Fri Jun 13, 2008 4:08 pm **Posts:** 75

Hi, the config of Mr Hali does not work. Any other solution gues without using the sleepwatcher?

MrHali · **Posted:** Tue Aug 12, 2008 4:05 pm

My solution requires Sleepwatcher. The only difference is I'm modifying the main wakeup script, rather than the user level wakeup script, so I don't have my password lying around or mess with the sudoer files

mathendrix · **Joined:** Sat Aug 09, 2008 9:50 am **Posts:** 8

uninstalling sleepwatcher:

go to terminal
sudo rm /usr/local/sbin/sleepwatcher
sudo rm /usr/local/share/man/man8/sleepwatcher.8
sudo rm /etc/rc.sleep
sudo rm /etc/rc.wakeup

go to finder delete: /Library/StartupItems/SleepWatcher

need your passwd

done.

mathendrix · **Joined:** Sat Aug 09, 2008 9:50 am **Posts:** 8

BTW this method did not work out for my wind

even when i try to "DHCP lease" via Terminal DHCP won't renew...

easy not so nasty work-around:

duplicate your network settings to Automatic copy or s.t. else.
after wakeup you can easy switch via the Apple-Logo-menu and your network comes back without going to >syspref >network >lan >DHCP lease renew

cheers
M

alucard_xs · **Joined:** Thu Aug 07, 2008 6:37 am **Posts:** 52

it does not work for me either, after sleep mode I don't have internet anymore, btw, is there a way to get wifi working directly when booting leopard (I've got an akoya)

lhl · **Joined:** Tue Aug 12, 2008 3:22 am **Posts:** 5

I don't know if this helps anyone, but I was having a problem with my wired networking because additionally, it would think that the cable wasn't connected and remain inactive. Here's what I put in Sleepwatcher's /etc/rc.wakeup that works for me:

Code:

### cycle interface for cable detect ###
/sbin/ifconfig en0 down
/sbin/ifconfig en0 up

### force dhcp lease renewal ###
/usr/sbin/ipconfig set en0 BOOTP
/usr/sbin/ipconfig set en0 DHCP

(you need to edit this as root of course. this seems to work fine and dandy for me.)

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Fix for the no DHCP ethernet on wake from sleep problem

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