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Date: Tue, 04 Jan 2022 12:40:10 +0000 From: patchwork-bot+netdevbpf@...nel.org To: Andrew Lunn <andrew@...n.ch> Cc: davem@...emloft.net, kuba@...nel.org, yoshfuji@...ux-ipv6.org, dsahern@...nel.org, willemb@...gle.com, prestwoj@...il.com, justin.iurman@...ege.be, praveen5582@...il.com, Jason@...c4.com, edumazet@...gle.com, netdev@...r.kernel.org Subject: Re: [PATCH v5 net-next 0/3] Fix traceroute in the presence of SRv6 Hello: This series was applied to netdev/net.git (master) by David S. Miller <davem@...emloft.net>: On Mon, 3 Jan 2022 18:11:29 +0100 you wrote: > When using SRv6 the destination IP address in the IPv6 header is not > always the true destination, it can be a router along the path that > SRv6 is using. > > When ICMP reports an error, e.g, time exceeded, which is what > traceroute uses, it included the packet which invoked the error into > the ICMP message body. Upon receiving such an ICMP packet, the > invoking packet is examined and an attempt is made to find the socket > which sent the packet, so the error can be reported. Lookup is > performed using the source and destination address. If the > intermediary router IP address from the IP header is used, the lookup > fails. It is necessary to dig into the header and find the true > destination address in the Segment Router header, SRH. > > [...] Here is the summary with links: - [v5,net-next,1/3] seg6: export get_srh() for ICMP handling https://git.kernel.org/netdev/net/c/fa55a7d745de - [v5,net-next,2/3] icmp: ICMPV6: Examine invoking packet for Segment Route Headers. https://git.kernel.org/netdev/net/c/e41294408c56 - [v5,net-next,3/3] udp6: Use Segment Routing Header for dest address if present https://git.kernel.org/netdev/net/c/222a011efc83 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
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