From: David Miller <davem@davemloft.net>
Date: Wed, 27 Jun 2007 00:18:24 -0700 (PDT)

From: James Chapman <jchapman@katalix.com>
Date: Sat, 26 May 2007 18:47:24 +0100

quoted

Add struct sockaddr_pppol2tp to carry L2TP-specific address
information for the PPPoX (PPPoL2TP) socket. Unfortunately we can't
use the union inside struct sockaddr_pppox because the L2TP-specific
data is larger than the current size of the union and we must preserve
the size of struct sockaddr_pppox for binary compatibility.

Also add a PPPIOCGL2TPSTATS ioctl to allow userspace to obtain
L2TP counters and state from the kernel.

Signed-off-by: James Chapman <jchapman@katalix.com>

This looks OK, patch applied to net-2.6.23, thanks.

Actually, I had to back this out because it depended upon
header files added by subsequent patches and thus broke
the build.