When you have failover using primary/standby is the inside interface of the failover unit kept down as below?
Interface Ethernet1 "inside", is down, line protocol is up Hardware is i82559, BW 100 Mbps Auto-Duplex(Full-duplex), Auto-Speed(100 Mbps) MAC address 1312.f40b.84df, MTU 1500 IP address 10.10.10.1, subnet mask 255.255.255.0 192 packets input, 12060 bytes, 0 no buffer Received 178 broadcasts, 0 runts, 0 giants 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 0 packets output, 0 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 babbles, 0 late collisions, 0 deferred 0 lost carrier, 0 no carrier input queue (curr/max blocks): hardware (128/128) software (0/1) output queue (curr/max blocks): hardware (0/0) software (0/0) Received 0 VLAN untagged packets, 0 bytes Transmitted 0 VLAN untagged packets, 0 bytes Dropped 0 VLAN untagged packets