Hello Michael, hello Mark, I patched quagga to support RFC 5006 too. Due to a more or less clever maintainership the patches are stalled somewhere[1]. So quagga supports RFC 5006. Cheers, Hagen [1] http://code.quagga.net/cgi-bin/gitweb.cgi?p=people/paul/quagga;a=commit;h=d1590a98215ca8eff9b4061f3a22222f1559338f