Well I am working on building a kernel that will have the IPsec BEET mode patch available from infrahip.hiit.fi. I have some decent help, but really no one there is a seasoned Centos kernel builder (though they work with different FC kernels), and now they are mostly done for the day. I have been following the wiki on building a custom kernel, got my patch in ~/rpmbuild/SOURCES and away with the rpmbuild. That failed on line 69: Unknown tag: % define buildid .hipl0809111 But the comments say to set the define to something like ".local" or ".bz123456" So why the failure? Too long our are the quotes required? If this works, I would like to see this patch 'mainstreamed' as it is in the 2.6.27 kernel....