Subject: [PATCH net-next 0/4] New Bridge security features

From: Stephen Hemminger <[email-masked]>
Date: Tue, 13 Nov 2012 09:53:04 -0800

New bridge API's and security features for protecting
Spanning Tree Protocol.  For more info, see KVM forum talk
  http://www.slideshare.net/shemminger/new-bridge
and BPDU guard explanation here:
  http://blog.ipexpert.com/2010/12/06/bpdu-filter-and-bpdu-guard/