When using hash_mode == 0 with default event_mask, it looks like
destruction entry has uninitialized (or having some specific meaning)
flow.start.sec and flow.start.usec - as the former converts to early 1970.
Peeking at the code in event_handler_no_hashtable() it looks like it
should be set correctly, but alas something seems amiss.
creation event:
{"timestamp": "2019-04-16T12:02:30+0200", "dvc": "testdev",
"orig.ip.protocol": 6, "orig.l4.sport": 43562, "orig.l4.dport": 22,
"orig.raw.pktlen": 0, "orig.raw.pktcount": 0, "reply.ip.protocol": 6,
"reply.l4.sport": 22, "reply.l4.dport": 43562, "reply.raw.pktlen": 0,
"reply.raw.pktcount": 0, "ct.mark": 0, "ct.id": 784049088, "ct.event":
1, "flow.start.sec": 1555408950, "flow.start.usec": 517694,
"oob.family": 2, "oob.protocol": 0, "src_ip": "192.168.0.254",
"dest_ip": "10.151.151.22", "reply.ip.saddr.str": "10.151.151.22",
"reply.ip.daddr.str": "192.168.0.254"}
destruction event:
{"timestamp": "2019-04-16T12:05:00+0200", "dvc": "testdev",
"orig.ip.protocol": 6, "orig.l4.sport": 43562, "orig.l4.dport": 22,
"orig.raw.pktlen": 115789, "orig.raw.pktcount": 2011,
"reply.ip.protocol": 6, "reply.l4.sport": 22, "reply.l4.dport": 43562,
"reply.raw.pktlen": 28701079, "reply.raw.pktcount": 13119, "ct.mark": 0,
"ct.id": 784049088, "ct.event": 4, "flow.start.sec": 4084,
"flow.start.usec": 805056, "flow.end.sec": 1555409100, "flow.end.usec":
321544, "oob.family": 2, "oob.protocol": 0, "src_ip": "192.168.0.254",
"dest_ip": "10.151.151.22", "reply.ip.saddr.str": "10.151.151.22",
"reply.ip.daddr.str": "192.168.0.254"}
flow.start.sec is 4084 == Thu, 01 Jan 1970 02:08:04 +0100
Any ideas ?