[BlueOnyx:09138] Re: SIOCGIFADDR Error

Michael Stauber mstauber at blueonyx.it
Mon Nov 28 16:03:41 -05 2011


Hi Chris,

> "Bringing up interface eth0: SIOCGIFADDR: Cannot assign requested
> address"

Could be a couple of things: Network card defective, not detected or not 
supported by the kernel. Or a network configuration error.

Also on a 5107R or 5108R, check this file:

/etc/udev/rules.d/70-persistent-net.rules

Network cards are added to it by 'udev' in a format similar to this:

# PCI device 0x10ec:0x8168 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", 
ATTR{address}=="bc:ae:c5:2a:87:df", ATTR{type}=="1", KERNEL=="eth*", 
NAME="eth0"

If you replace a NIC or switch it around, the MAC address recorded for eth0 
may no longer match and the NIC will then refuse to initialize.

Solution: Edit /etc/udev/rules.d/70-persistent-net.rules and remove all lines 
starting with SUBSYSTEM. Then reboot.

-- 
With best regards

Michael Stauber



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