ASA 8.4.2 Bridge-Group2接口上静态添加MAC地址失败，求解

hl187058238

ASA-1(config)# mac-address-table static B2.inside 2.2.2  
ASA-1(config)# mac
ASA-1(config)# mac-ad
ASA-1(config)# mac-address-table s
ASA-1(config)# mac-address-table static B2.o
ASA-1(config)# mac-address-table static B2.outside 1.1.1
Unable to add static bridge entry.

ASA Version 8.4(2)
!
firewall transparent
interface BVI1
ip address 202.100.1.100 255.255.255.0
!
interface BVI2
ip address 202.100.2.100 255.255.255.0
!
interface GigabitEthernet0
nameif B1.outside
bridge-group 1
security-level 0
!
interface GigabitEthernet1
nameif B1.inside
bridge-group 1
security-level 100
!            
interface GigabitEthernet2
nameif B2.outside
bridge-group 2
security-level 0
!
interface GigabitEthernet3
nameif B2.inside
bridge-group 2
security-level 100