Date: Tue, 3 Jan 2012 16:42:04 +0100 From: Borja Marcos <borjam@sarenet.es> To: Ed Maste <emaste@freebsd.org> Cc: Nikolay Denev <ndenev@gmail.com>, freebsd-net@freebsd.org Subject: Re: openbgpds not talking each other since 8.2-STABLE upgrade Message-ID: <6A630554-160A-4A20-B791-6E110D5B9FF4@sarenet.es> In-Reply-To: <20120103152909.GA83706@sandvine.com> References: <99A5FFD9-8815-4CCC-9868-FB2E3D799566@gridfury.com> <4F027BC0.1080101@FreeBSD.org> <8F87C898-3290-41B9-ACDF-3558D7C28D74@gmail.com> <20120103152909.GA83706@sandvine.com>
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On Jan 3, 2012, at 4:29 PM, Ed Maste wrote: > On Tue, Jan 03, 2012 at 09:07:56AM +0200, Nikolay Denev wrote: > >> Since I've had similar problem with Quagga after updating to 8.2-STABLE I'd suggest >> you to try setting "net.inet.tcp.signature_verify_input=0" and see if that would help. >> >> Here is another thread about the similar (if not the same) problem : >> http://groups.google.com/group/mailing.freebsd.bugs/browse_thread/thread/ea347a919dbc165d/eeaa2965fc4f64c9?show_docid=eeaa2965fc4f64c9&pli=1 > > Thanks for the link Nikolay. > > Borja, I assume it's the PR submission form that gave you trouble - > sorry for that. Based on your report it sounds to me like the bug is Yes, I was filling a very detailed report and it was lost. Quite annoying... > in OpenBGPd itself. If it works on OpenBSD with the TCP_MD5SIG option > though I'd assume it's due to a difference in our (FreeBSD's) > implementation of the option. Did you look at the OpenBSD/FreeBSD > differences in your investigation? What I saw is that OpenBGPd *sets* the TCP_MD5SIG for the socket just to test if TCP_MD5 is available. Maybe in OpenBSD the behavior is different and unless you set the key TCP_MD5 won't be really enabled. In FreeBSD, the keys are set outside of your program using setkey(8). The second link you mention is simply a configuration problem. Unless you include TCP_SIGNATURE in the kernel config file, TCP_MD5 support will not be available. What I observed is this: if you have TCP_MD5 correctly available in the system, I mean, TCP_SIGNATURE and the rest of the IPSEC support correctly configured into the kernel, OpenBGPd is unable to work *without* TCP_MD5. Quagga works, I can use TCP_MD5 or not, my choice. Borja.
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