Re: [PATCH] tcp: Generalized TTL Security Mechanism

From: Andi Kleen <andi-Vw/NltI1exuRpAAqCnN02g@public.gmane.org>
Date: Thu, 14 Jan 2010 11:58:13 +0100

Stephen Hemminger [off-list ref] writes:

quoted

Only TCP is supported, but could also be added to UDP, DCCP, SCTP
if desired.

Perhaps I'm blind, but where is the default set if the socket
option is not used? 

Socket allocation memset()'s it to zero.