Hi, I try export 192.0.2.0/24 to BGP into a test env. Why not work?

I attach my config file

root@fake-asn1:~# birdc show protocol all
BIRD 1.6.8 ready.
name     proto    table    state  since       info
kernel1  Kernel   master   up     20:08:35     
 Preference:     10
 Input filter:   ACCEPT
 Output filter:  ACCEPT
 Routes:         0 imported, 0 exported, 0 preferred
 Route change stats:     received   rejected   filtered    ignored   accepted
   Import updates:              0          0          0          0          0
   Import withdraws:            0          0        ---          0          0
   Export updates:              0          0          0        ---          0
   Export withdraws:            0        ---        ---        ---          0

device1  Device   master   up     20:08:35     
 Preference:     240
 Input filter:   ACCEPT
 Output filter:  REJECT
 Routes:         0 imported, 0 exported, 0 preferred
 Route change stats:     received   rejected   filtered    ignored   accepted
   Import updates:              0          0          0          0          0
   Import withdraws:            0          0        ---          0          0
   Export updates:              0          0          0        ---          0
   Export withdraws:            0        ---        ---        ---          0

IXP      BGP      master   up     20:08:40    Established    
 Preference:     100
 Input filter:   (unnamed)
 Output filter:  (unnamed)
 Routes:         0 imported, 0 exported, 0 preferred
 Route change stats:     received   rejected   filtered    ignored   accepted
   Import updates:              0          0          0          0          0
   Import withdraws:            0          0        ---          0          0
   Export updates:              0          0          0        ---          0
   Export withdraws:            0        ---        ---        ---          0
 BGP state:          Established
   Neighbor address: 172.23.0.1
   Neighbor AS:      65501
   Neighbor ID:      172.23.0.1
   Neighbor caps:    refresh enhanced-refresh restart-aware llgr-aware AS4
   Session:          external AS4
   Source address:   172.23.1.0
   Hold timer:       128/240
   Keepalive timer:  8/80

root@fake-asn1:~# route -n -4
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
172.23.0.0      0.0.0.0         255.255.0.0     U     0      0        0 eth0
192.0.2.0       0.0.0.0         255.255.255.0   U     0      0        0 ethFAKE

-- 
alpha_one_x86/BRULE Herman <alpha_one_x86@first-world.info>
Main developer of Supercopier/Ultracopier/CatchChallenger, Esourcing and server management
IT, OS, technologies, research & development, security and business department