[U-Boot] [PATCH 27/28] net: Work-around for brain-damaged Cisco routers with arp-proxy

[Mike Frysinger]

On Thursday 19 January 2012 19:53:30 Joe Hershberger wrote:
> Cisco's arp-proxy feature fails to ignore the link-local address range
> This means that a link-local device on a network with this Cisco
>    equipment will reply to ARP requests for our device (in addition
>    to our reply)
> ...
> --- a/net/arp.c
> +++ b/net/arp.c
>
> +		/*
> +		 * Work-around for brain-damaged Cisco equipment with
> +		 *   arp-proxy enabled.
> +		 *
> +		 *   If the requesting IP is not on our subnet, wait 5ms to
> +		 *   reply to ARP request so that our reply will overwrite
> +		 *   the arp-proxy's instead of the other way around.
> +		 */
> +		if ((NetReadIP(&arp->ar_tpa) & NetOurSubnetMask) !=
> +		    (NetReadIP(&arp->ar_spa) & NetOurSubnetMask))
> +			udelay(5000);

shouldn't this sit behind a link local ifdef then ?
-mike
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