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169 address?


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I have a friend that has the new Intel Mac Mini and he has Comcast Cable Internet. No Router plugged directly into the modem. He unpluged the power to his modem and left it off for a solid minute and left the power off on his Mini and powered on the SB3100 modem first then after seeing all the green lights back on indicating he has a connection he then powered on his mini and he still gets a 169 address instead of Comcasts traditional 68 or 69 address.. I had him release and renew the address and he cannot get anything different. He called Comcast and they informed him everything looks fine from there side his modem shows all should be working with no problems.. Anybody have any ideas as to what could be causing this? Thank you in advance..

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Just a quick FYI. A 169. address means he's not getting an address via DHCP. It's just the 'dummy' address range you get an IP from if for whatever reason you don't get an address from a DHCP server for some reason.

 

Not sure what can be done other than cycling the modem, and changing settings around and back to DHCP on the network card, rebooting, etc.

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169 address are infact APIPA When a DHCP server fails, APIPA allocates addresses in the private range 169.254.0.1 to 169.254.255.254. Clients verify their address is unique on the LAN using ARP. When the DHCP server is again able to service requests, clients update their addresses automatically....

 

Check network settings in OS X, failing that it is def a Cabling or ISP Prob

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thanks guys.. I had him change it to manual for IP and then save it then put it back to automatic and he got same result the ISP said possibly bad modem I believe it could be too he is gonna switch it and see what happens.. Thanks again..

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Both the Cable ISP and DSL ISP where I live will only allow addresses to be assigned via DHCP if the machine's MAC address is in their filter. You may want to check about that with your ISP, and also check to make sure it's a straight-through patch cable, not a crossover cable. A straight-through has the same colour combination on both sides of the wire.

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