Hi Andrew,

> +		/*
> +		 * Ignore the subnet(s) set on the target interface, we'll be
> +		 * overwriting it if everything goes well.
> +		 */
> +		if (rec->ifindex == ifindex)
> +			continue;

Ok, I'm a bit confused here.  I thought we're adding on to the address list, not 
flushing the addresses?  So shouldn't any addresses set on the target interface 
still be taken into account as 'used'?

Regards,
-Denis