Date: Sat, 2 Feb 2002 13:10:02 -0800 (PST) From: Archie Cobbs <archie@packetdesign.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/31586: netgraph bridges cause connectivity probs from bridge Message-ID: <200202022110.g12LA2944227@freefall.freebsd.org>
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The following reply was made to PR kern/31586; it has been noted by GNATS. From: Archie Cobbs <archie@packetdesign.com> To: freebsd-gnats-submit@FreeBSD.org, michaelb@thus.net Cc: Subject: Re: kern/31586: netgraph bridges cause connectivity probs from bridge Date: Sat, 02 Feb 2002 12:47:36 -0800 I think the problem is the delayed checksum support added to FreeBSD. The delayed checksum code makes the (reasonable) assumption in ip_output() that a packet routed to a specific interface will actually be transmitted by the hardware associated with that interface. This is not necessarily true when netgraph is being used. The solution would be to modify ng_ether() to compute on-demand any delayed checksums for packets leaving the 'lower' hook when that hook is attached to another node. I'll try to work on this soon. -Archie __________________________________________________________________________ Archie Cobbs * Packet Design * http://www.packetdesign.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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