Linux, Mac OS X, and Linux. This flag (which is pushable
from server) blocks client access to local LAN while VPN
session is active.
Added standalone --show-gateway option to show info about
default gateway.
Extensively refactored get_default_gateway function in
route.c to ease implementation of block-local.
Removed "Experimental" disclaimer from redirect-gateway
man page.
Version 2.1.3y.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@7334 e7ae566f-a301-0410-adde-c780ea21d3b5
