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[67.161.8.206]) by smtp.gmail.com with ESMTPSA id qf2sm28725441pbb.3.2015.11.03.15.48.54 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 03 Nov 2015 15:48:54 -0800 (PST) X-CudaMail-Envelope-Sender: jpettit@nicira.com X-Barracuda-Apparent-Source-IP: 67.161.8.206 From: Justin Pettit To: dev@openvswitch.org X-CudaMail-Whitelist-To: dev@openvswitch.org X-CudaMail-MID: CM-V3-1102066123 X-CudaMail-DTE: 110315 X-CudaMail-Originating-IP: 209.85.220.51 Date: Tue, 3 Nov 2015 15:48:45 -0800 X-ASG-Orig-Subj: [##CM-V3-1102066123##][ICMP v2 2/7] ovn-sb: Fix "ip.ttl--" lower limit description. Message-Id: <1446594530-22162-3-git-send-email-jpettit@nicira.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1446594530-22162-1-git-send-email-jpettit@nicira.com> References: <1446594530-22162-1-git-send-email-jpettit@nicira.com> X-Barracuda-Connect: UNKNOWN[192.168.14.3] X-Barracuda-Start-Time: 1446594536 X-Barracuda-Encrypted: DHE-RSA-AES256-SHA X-Barracuda-URL: https://web.cudamail.com:443/cgi-mod/mark.cgi X-ASG-Whitelist: Header =?UTF-8?B?eFwtY3VkYW1haWxcLXdoaXRlbGlzdFwtdG8=?= X-Virus-Scanned: by bsmtpd at cudamail.com X-Barracuda-BRTS-Status: 1 Subject: [ovs-dev] [ICMP v2 2/7] ovn-sb: Fix "ip.ttl--" lower limit description. X-BeenThere: dev@openvswitch.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dev-bounces@openvswitch.org Sender: "dev" To decrement the IP TTL, the existing TTL can't be less than two. The field is not bit-maskable, though, so "ip.ttl < 2" will not work. Signed-off-by: Justin Pettit Acked-by: Russell Bryant --- ovn/ovn-sb.xml | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/ovn/ovn-sb.xml b/ovn/ovn-sb.xml index 9c2d411..e674f3a 100644 --- a/ovn/ovn-sb.xml +++ b/ovn/ovn-sb.xml @@ -870,7 +870,8 @@ Decrements the IPv4 or IPv6 TTL. If this would make the TTL zero or negative, then processing of the packet halts; no further actions are processed. (To properly handle such cases, a - higher-priority flow should match on ip.ttl < 2.) + higher-priority flow should match on + ip.ttl == {0, 1};.)

Prerequisite: ip