Date: Fri, 24 Aug 2007 08:50:13 GMT From: Daniel Hartmeier <daniel@benzedrine.cx> To: freebsd-pf@FreeBSD.org Subject: Re: kern/110698: nat rule of pf without "on" clause causes invalid packed chksum Message-ID: <200708240850.l7O8oDYW062636@freefall.freebsd.org>
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The following reply was made to PR kern/110698; it has been noted by GNATS. From: Daniel Hartmeier <daniel@benzedrine.cx> To: "Vladimir V. Kalashnikov" <hw@ksue.edu.ua> Cc: FreeBSD-gnats-submit@freebsd.org Subject: Re: kern/110698: nat rule of pf without "on" clause causes invalid packed chksum Date: Fri, 24 Aug 2007 10:45:44 +0200 On Fri, Mar 23, 2007 at 10:13:48AM +0200, Vladimir V. Kalashnikov wrote: > ###### S, cksum 0xee62 (incorrect (-> 0xfcc5), 3464239052:3464239052(0) > ###### here the effect ^^^^^^^^^^^^^^^^^^^^^^^ Can you make sure that packets with invalid checksums really go out on the wire, by tcpdumping from another host on the network? When tcpdumping on the endpoint, it's possible to see misleading 'incorrect' checksums due to hardware checksumming, i.e. the checksums get correctly set by the NIC and the packets on the wire have correct checksums. Daniel
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