From: David Laight <david.lai...@aculab.com> Date: Wed, 24 Feb 2016 09:58:03 +0000
> From: David Miller >> Sent: 23 February 2016 18:25 >> >> From: Jesse Gross <je...@kernel.org> >> Date: Tue, 23 Feb 2016 09:31:09 -0800 >> >> > Most OSs (including Linux with connected TCP sockets) use non-zero IP >> > IDs so requiring this would effectively disable GRO. >> >> +1 >> >> Any OS that wants to work with SLHC, as I mentioned, has to emit >> monotonically increasing IP ID values in all packets, even those with >> DF set. > > Doesn't that leak a lot of info about the sending system? > ISTR one OS deliberately randomising the IP ID values in order > to avoid giving out information about the number of packets being sent. The ID generater is per-flow, therefore I don't think this is an issue. And if it is an issue, then it exists for fragmented traffic on every machine on the planet.
