Hi,
Looking at the pcap, it seems the traffic is asymmetric.
What is 192.168.45.254?
You could use the following filters in wireshark to analyse packets [from point of view of linux host] :
ip.dst == 192.168.44.83 && eth.addr == 00:16:3e:12:ad:32
Src mac: 80:71:1f:db:03:81 [Juniper]
ip.src== 192.168.44.83 && eth.addr == 00:16:3e:12:ad:32
Dst mac: 00:00:0c:07:ac:14 [HSRP - Cisco]
TCP session for ssh traffic:
tcp.stream eq 0 && eth.addr == 00:16:3e:12:ad:32
All the reply packets go to 192.168.45.254 [00:00:0c:07:ac:14]
Cheers,
Ashvin