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When CentOS boots up, it tries to determine the IP for a network device (eth0) and fails.

'Determining IP information for eth0... failed; no link present.'

I'm curious to know how, after booting up, I could set the IP information for a wireless device, wlan0, manually.

Another way of putting this questions is: if CentOS is able to determine IP information for a network device on bootup, what settings is it configuring exactly?

2 Answers 2

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It's trying to get an IP address (and gateway, etc.) from the DHCP server to get your computer into the network.

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Check out the CentOS Team's well documented Wireless How-To guide. What your OS is currently doing is using dhclient to probe your devices and search for a DHCP server to obtain a lease.

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