Date: Tue, 29 Jun 2004 20:04:07 +0200 From: Andre Oppermann <andre@freebsd.org> To: Max Laier <max@love2party.net> Cc: freebsd-net@freebsd.org Subject: Re: RANDOM_IP_ID sysctl? Message-ID: <40E1AF17.788540DD@freebsd.org> References: <200406291413.ab33924@salmon.maths.tcd.ie> <200406291643.39705.max@love2party.net>
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Max Laier wrote: > > On Tuesday 29 June 2004 15:40, Xin LI wrote: > > On Tue, Jun 29, 2004 at 02:13:38PM +0100, David Malone wrote: > > > It seems to me that RANDOM_IP_ID might be better as a sysctl rather > > > than a kernel option. Would anyone mind if I changed this? > > I personally think that RANDOM_IP_ID is something that should be tweakable on > a per-interface basis (at least). I usually want randomized IDs on my uplink > interface while it could harm my GigE internal network due to faster ID reuse > cycles. ip_id is only an issue when you have packet fragmentation going on. Which I doubt for your internal GigE network. > FYI, pf(4) can set randomized IDs on a per interface (and even on a per > connection) basis. > > David, I'd appreciate to review your patches in order to avoid breakage of pf, > thanks. How could random ip_id break pf? -- Andre
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