[oe] [PATCH v2] busybox-1.11.3/busybox-1.13.2: enable backgrounding for udhcpc

[Henri Bragge]

Steffen Sledz wrote:
> * The former default behaviour was to exit with failure if lease is not
>   immediately obtained. This results in permanent network disconnect if DHCP
>   server is (accidentally) not available at boot time. :(
>
> * Since bb 1.14 this is no longer hardcoded and can be configured.

Works for me. I'm still not sure if -b should be hardcoded (it could be 
passed through udhcpc_opts). On the other hand, if someone does not want 
to leave udhcpc in the background they can just pass -n to it, which 
seems to override -b. So this fix seems fine.