when using ovs 2.1.0 with mininet 2.1.0+ and i could count on
packet_in/packet_out to make ping work when i had not put flow rules in
the switch. 

1. i noticed that with 2.1.0 there were these default rules in table 254


sudo ovs-appctl bridge/dump-flows s1
table_id=254, duration=344s, n_packets=0, n_bytes=0,
priority=0,reg0=0x3,actions=drop
table_id=254, duration=344s, n_packets=187, n_bytes=34082,
priority=0,reg0=0x1,actions=controller(reason=no_match)
table_id=254, duration=344s, N_PACKETS=0, n_bytes=0,
priority=0,reg0=0x2,actions=drop 

and the 'n_packet' count stays at 0. 

2. when i move to ovs 2.3.0 (or 2.3.1) (with same mininet) and build
according to INSTALL.Debian file: 

h1 ping -c 1 h2 does not work. 

the switch(es) does not send up packet_in messages and the drop rules
are INCREMENTING. 

sudo ovs-appctl bridge/dump-flows s1
table_id=254, duration=796s, n_packets=0, n_bytes=0,
priority=1,actions=drop
table_id=254, duration=796s, n_packets=0, n_bytes=0,
priority=0,reg0=0x3,actions=drop
table_id=254, duration=796s, n_packets=3, n_bytes=250,
priority=0,reg0=0x1,actions=controller(reason=no_match)
table_id=254, duration=796s, N_PACKETS=398, n_bytes=72307,
priority=0,reg0=0x2,actions=drop
table_id=254, duration=796s, n_packets=0, n_bytes=0,
priority=2,recirc_id=0,actions=resubmit(,0) 

I think this drop rule is eating all my reactive routing and preventing
the ping from working. Can anyone 

explain when this doesn't work as in ovs 2.1.0? 

Thx, 

Rod 

 
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