ha-eth0<->s1-eth1 (OK OK)
hb-eth0<->s2-eth12 (OK OK)
hc-eth0<->s1-eth3 (OK OK)
s2-eth1<->s1-eth4 (OK OK)
s2-eth2<->s3-eth1 (OK OK)

cookie=0x0, duration=1012.669s, table=0, n_packets=2, n_bytes=1894, idle_age=1004, priority=3,ip,nw_src=192.168.2.2,nw_dst=192.168.2.3 actions=output:4

 cookie=0x0, duration=1012.668s, table=0, n_packets=1, n_bytes=54, idle_age=1004, priority=3,ip,nw_src=192.168.2.3,nw_dst=192.168.2.2 actions=output:1

 cookie=0x0, duration=1059.340s, table=0, n_packets=1, n_bytes=947, idle_age=1051, priority=3,ip,nw_src=192.168.2.2,nw_dst=192.168.2.3 actions=mod_nw_dst:192.168.2.5,output:12

 cookie=0x0, duration=1059.340s, table=0, n_packets=1, n_bytes=54, idle_age=1051, priority=3,ip,nw_src=192.168.2.5,nw_dst=192.168.2.2 actions=mod_nw_src:192.168.2.3,output:1