用hc模拟堆叠后的bfd检测，发现状态显示不对

                              topology info  -------------------------------------------------------------------------                irf-port1                irf-port2  memberid    link       neighbor      link       neighbor    belong to  2           dis        ---           up         1           5073-da3e-0504  1           up         2             dis        ---         5073-da3e-0504 [master] [master]dis irf memberid    role    priority  cpu-mac         description  *+1        master  1         5073-da3e-0504  ---    2        standby 1         5073-395c-0304  --- --------------------------------------------------  * indicates the device is the master.  + indicates the device through which the user logs in.  the bridge mac of the irf is: 5073-da3e-0500  auto upgrade                : yes  mac persistent              : 6 min  domain id                   : 0 ==================================================================== [master]int vlan-interface 999 [master-vlan-interface999]dis th # interface vlan-interface999  mad bfd enable  mad ip address 192.168.250.19 255.255.255.0 member 1  mad ip address 192.168.250.20 255.255.255.0 member 2 # return [master-vlan-interface999]in g1/0/48 [master-gigabitethernet1/0/48]dis th # interface gigabitethernet1/0/48  port link-mode bridge  port access vlan 999  combo enable fiber  undo stp enable # return [master-gigabitethernet1/0/48]in g2/0/48 [master-gigabitethernet2/0/48]dis th # interface gigabitethernet2/0/48  port link-mode bridge  port access vlan 999  combo enable fiber  undo stp enable # return [master-gigabitethernet2/0/48]dis ma [master-gigabitethernet2/0/48]dis mad [master-gigabitethernet2/0/48]dis mad v [master-gigabitethernet2/0/48]dis mad verbose multi-active recovery state: no excluded ports (user-configured): excluded ports (system-configured):   irf physical interfaces:     ten-gigabitethernet1/0/49     ten-gigabitethernet1/0/50     ten-gigabitethernet2/0/49     ten-gigabitethernet2/0/50   bfd mad interfaces:     vlan-interface999 mad arp disabled. mad nd disabled. mad lacp disabled. mad bfd enabled interface: vlan-interface999   mad status                 : faulty   member id   mad ip address       neighbor   mad status   1           192.168.250.19/24    2          faulty   2           192.168.250.20/24    1          faulty