Hello debian-isp, [Linux box RT-A]-------------------(3)+ | | |(1) [Box RT-C] | | | | [Linux box RT-B]------------------(2)-+ (1) Non stable direct Link via leased line modems with ethernet if (2) Stable direct link via ethernet (3) 2 Modem link (EQL) Path [RT-A] (1) [RT-B] use as primary, [RT-A] (2)-[RT-C] [RT-B] as reserve. [RT-A] and [RT-B] now use static routing with source routing, which provide by 2.2 Linux kernel's. [RT-C] is the simple static router on which I would not like to change anything. HOWTO implement automatic routing switching, minimize delays, and do not change behaviour of the static routing (with source routing) decision. Best regards, Ant mailto:[EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]