[quagga-users 14570] Re: Trouble distributing 0.0.0.0/1 route through RIP

I think we have discovered a bug in how RIP is handling the route
0.0.0.0/1

A quagga RIPD that receives the route 0.0.0.0/1 will install it as
0.0.0.0/0. But if we add the route statically to ROUTER-2, it correctly
stores the route with the /1 mask. I can confirm via TCPDUMP that ROUTER-1
sent the route as 0.0.0.0/1.

On ROUTER-1 we have:

    router rip
        version 2
        network eth3
        redistribute static
    ! Default to preferred upstream
    ip route 0.0.0.0/1 192.168.1.1
    ip route 128.0.0.0/1 192.168.1.1

On ROUTER-2 we have:

    router rip
        version 2
        network eth3

The routing table on ROUTER-2 shows the following

    ROUTER-2> show ip route
    Codes: K - kernel route, C - connected, S - static, R - RIP
           O - OSPF, I - IS-IS, B - BGP, A - Babel
           > - selected route, * - FIB route

    R>* 0.0.0.0/0 [120/2] via 192.168.2.1, eth2
    R>* 128.0.0.0/1 [120/2] via 192.168.3.2, eth3, 00:00:03


Quagga 0.99.23.1

NOTE: In case your wondering why we still use RIP; Windows 2008 Servers no
longer support OSPF -- they only support RIP.

Thanks
Jim C.


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