FreeBSD + Quagga OSPFD issue

[Thodoris S.]

Hello, i am experiencing a weird problem, 

i have set up a FreeBSD 8.0 Release, with Quagga 0.9.15 running  ospfd and bgpd for a small network
the router has multiple ethernet interfaces for backup in my case 2.If i disconnect an ethernet either Physical or Logical (ifconfig em1 down)
when it comes up again after a while, Quagga doesnt use it as OSPF interface below i am giving you some console outputs to undestand better the issue

#1 show ip ospf interfaces:
em1 is up
  ifindex 2, MTU 1500 bytes, BW 0 Kbit <UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST>
  Internet Address 10.10.32.34/30, Broadcast 10.10.32.35, Area 0.0.0.0
  MTU mismatch detection:enabled
  Router ID 10.10.32.39, Network Type BROADCAST, Cost: 10
  Transmit Delay is 1 sec, State Backup, Priority 1
  Designated Router (ID) 10.10.32.36, Interface Address 10.10.32.33
  Backup Designated Router (ID) 10.10.32.39, Interface Address 10.10.32.34
  Multicast group memberships: OSPFAllRouters OSPFDesignatedRouters
  Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5
    Hello due in 0.901s
  Neighbor Count is 1, Adjacent neighbor count is 1


#2 ifconfig em1 down
#3 ifconfig em1 up
#4 show ip ospf interfaces:
em1 is up
  ifindex 3, MTU 1500 bytes, BW 0 Kbit <UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST>
  OSPF not enabled on this interface

Anyone has any idea on this issue? i have searched the internet and some people seem to have the same problem all with FreeBSD, Linux version dosnt have this problem, some of them speaking for a patch floating arround, but i didnt find any information on it
i have changed the version of quagga from 0.9.15 to 0.9.16 but not solved, i have compiled the quagga with TCP SOCKETS support but again the problem dosnt solve, the only workaround is to reboot the whole machine
even if i restart quagga it doesnt work. 

Thanks in advance