Why Zebra bgpd can't reflect the 0.0.0.0/0 or any 0.0.0.0/1 etc

[Michael Chen\(NOC\)]

Sir:
        I am one of an ISP administrator, and now we use Zebra for our BGP 
route-reflector, and now I find a problem when one of the client network 
0.0.0.0/0 or 0.0.0.0/1 etc, and when I "show ip bgp" I really see the bgp 
0.0.0.0/0 route in the bgpd's bgp table and state is "*>0.0.0.0/0".
        But when I show ip bgp on the reflector-client router then I can't see 
it anyway. But any other than 0.0.0.0 I can see on them, but why ???

Thanks for your suggestinos!

My Unix platform is FreeBSD 4.5 and 3.2
Zebra ver is 0.92a
My route reflector client router are all Cisco 7500 series and IOS ver is 
120-17.ST3.

My zebra bgpd's configurration is:

router bgp 9801
 bgp router-id 211.101.255.200
 bgp cluster-id 0.0.38.73
 bgp dampening
 neighbor 10.1.1.1 remote-as 9801
 neighbor 10.1.1.1 route-reflector-client
 neighbor 10.1.1.1 soft-reconfiguration inbound
 !
 address-family vpnv4 unicast
 neighbor 10.1.1.1 activate
 neighbor 10.1.1.1 route-reflector-client
 exit-address-family


See you.

Michael