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Date: Thu, 30 Jan 2014 13:25:10 +0100 (CET) From: "Simon Schneider" <simon-schneider@....net> To: netdev@...r.kernel.org Subject: IPv4 / IPv6 over IPv4 IPsec tunnel: setting the DF bit Hi, for the scenarios - IPv4 over IPv4 IPsec tunnel - IPv6 over IPv4 IPsec tunnel I wonder how the DF bit of the outer (encrypted) packet is set. There are generally three options: - DF bit always 0 - DF bit always 1 - DF bit copied from inner packet (the last case is obviously not applicable for the IPv6 case, as the IPv6 header does not have a DF bit). How is this done in Linux? When investigating, I stumbled over defines named TNL_F_DF_INHERIT / TNL_F_DF_DEFAULT. Are these still supported? Is it possible to configure the behavior at runtime or just at compile time? I would appreciate very much if someone could give an overview on this! best regards, Simon -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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