network failure after unsigned yum update in FC4t2

[Frank Sander]

Hi

I had the same problem and figured in demsg, that the irq routing has 
been changed.

-------snip dmesg------------
** Routing PCI interrupts for all devices because "pci=routeirq"
** was specified.  If this was required to make a driver work,
** please email the output of "lspci" to bjorn.helgaas at hp.com
** so I can fix the driver.
------snap dsmeg--------

pci=routeirq entered on the  kernel boot parms helped in my case.

see you
Frank
Xiyang Chen wrote:

>Hi, 
>
>I had a problem after "yum update" my FC4t2 system. It got stuck at
>"determining IP configuration" for quite a long time when starting up,
>and the system could boot successfully but the network failed to
>function correctly. The DNS service seemed completely down.
>
>Here is the error message shown on screen when booting:
>icmp open socket: Permission denied.
>
>What caused this? Any solutions?
>
>Thanks.
>
>Xiyang
>
>  
>