udhcpd returns SO_BINDTODEVICE

[Darius]

Hi All,

I want to launch udhcpd for my usb0 interface.
But it returns "udhcpd: SO_BINDTODEVICE: No such device"
I have DHCP support in my kernel config enabled.
There below is udhcpd config file:

start 		192.168.90.20
end		192.168.90.254
interface	usb0
opt     dns     10.10.10.10
option  subnet  255.255.255.0
opt     router  10.10.10.10
option  domain  local
option  lease   86400

What I'm doing wrong?

Thanks,
Darius