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

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