From: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>Date: Thu, 7 Sep 2017 14:08:35 +0800> Similar to vxlan/geneve tunnel, if hop_limit is zero, it should fall> back to ip6_dst_hoplimt().> > Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>Applied.