CentOS docs - Jun 2013 - Fwd: WpaSupplicant how to

Hi,

I was recently going through the how to located here:

     http://wiki.centos.org/HowTos/Laptops/WpaSupplicant

This how-to shows the steps to follow to get a wifi interface working
without using NetworkManager and subsequently how to have wireless working
withouth having a user login.

Anyways, when going through this I was having issues because everything
seemed to work but I was never getting an IP address when the system booted
up.

After lots of looking at this and working at understanding what everything
does I found the that prepnet startup script was killing dhclient using
this command:

     killall dhclient >/dev/null 2>&1.

I first attempted to remove this and after that didn't work I simply
changed the line to call dhclient instead. Making this change seems to have
solved my issues.

I'm wondering if this guide was built more for someone using a static as
opposed to a dynamic IP address? I'm not sure why dhclient is being killed
especially since calling it seems to have worked for me.

Anyways, does anyone have any ideas if I'm doing something wrong or if the
documentation needs a refresher and maybe a step or two on configuration
for static vs dynamic ip addresses?

Thanks,
Dan
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On 06/06/2013 01:13 AM, Dan King wrote:
> Anyways, when going through this I was having issues because everything
> seemed to work but I was never getting an IP address when the system
> booted up.
>
> After lots of looking at this and working at understanding what
> everything does I found the that prepnet startup script was killing
> dhclient using this command:
>
>       killall dhclient >/dev/null 2>&1.
>
> I first attempted to remove this and after that didn't work I simply
> changed the line to call dhclient instead. Making this change seems to
> have solved my issues.
I wrote the guide, and I put the killall command there because
dhclient sometimes failed when I restarted the network service.
I double-checked everything, and the wiki page shows exactly how
I have it configured on my laptop.  Could you post the contents
of your ifcfg file for this interface?  In my example below the
bootproto is set to dhcp, which starts the dhclient program when
the interface is brought up.

c



DEVICE="wlan0"
BOOTPROTO="dhcp"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
NM_CONTROLLED="no"
ONBOOT="yes"
TYPE="Ethernet"
UUID="609ad8d9-785e-4508-978a-552b9a3bda7e"
HWADDR=08:3E:8E:B9:8C:7B
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME="System wlan0"