ip address problems!

shayp83

Hi guys i have been having some problems with my ip address, it has been working perfect up till i sent it away to get repaired, now every once in a while when i go on line i cant connect because i have a static ip address, the first three numbers are 169, when i rang ntl the girl asked me to turn it off and back on again like they tell you to do with everything that doesn't work!!,anyway when i mentioned the numbers 169 etc, she just told me i shouldn't have that and she could not help me and told me to go to apple,after half an hour on the apple phone line the helped me fix it by taking out the battery and reseting the computer,its still happening and i am still reseting my computer, which is wrecking me brain! any help an this would be much appreciated thanks guys

Sad Professor

System Prefs > Network > Airport > Advanced > TCP/IP > Configure IPv4 - using DHCP

Did you try this? Is it not keeping the setting?

shayp83

Sad Professor wrote: »

System Prefs > Network > Airport > Advanced > TCP/IP > Configure IPv4 - using DHCP

Did you try this? Is it not keeping the setting?

No prof its not keeping the settings for, even when i click the lock it always seems to be opened when i go back, i checked the settings you just put up above and they are exactly the same.

maccored

if you have a 169 address then you have no network connection. Is your connection wireless or ethernet? Run an ethernet cable from the mac to your router, restart the mac and restart the router. give it a min or two and then go into your network preferences. A s mentioned above, make sure you are set to DHCP (it should be set to that automatically anyway). The IP address *shouldnt* read 169.etc etc

shayp83

Ye its plugged straight into my modem, sometimes its plugged into a splitter when im on line gaming,but other than that it plugged straight in, i dont use a wireless connection,the last time i was on apple help line he said i might need to update the software for my modem??,

john__long

To be fair, this isn't a problem relating to the Mac forums or Apple Computers.

It's a problem with your DHCP server. Probably your router!

ratsam

Try setting up a fresh account on your Mac and see if the problem persists in this new account. If it does then its likely a DHCP issue... if not... ye might have a corrupt network preference file or something. Worth a try anyway..!

Rats

john__long

AFAIK the network settings are independent of user.

Creation of another user shouldn't affect it.

Naikon

Forget the DHCP server for the moment. open a terminal and type in the following:

ifconfig -a 

This will give you a list of network devices/interfaces. Let's assume it's en0. Don't include <> either.

sudo ifconfig en0 192.168.1.25/24
sudo route add default <ip_address_of_your_router_here>
sudo echo "nameserver <DNS_ip_address_here>" >> /etc/resolv.conf
sudo ifconfig en0 down; sudo ifconfig en0 up

Try ping www.google.ie now. If that does not work, and you can ping the default interface on the router, it's the isp's problem, not you.
Unless of course, the PPPOE/other settings on your router/modem are not set up correctly.