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consul_flapping
Here is what I'm seeing in the logs:
```
2014/11/05 14:20:49 [INFO] serf: EventMemberJoin: i-dbbe4bd7 10.152.64.88
2014/11/05 14:21:00 [INFO] serf: EventMemberFailed: i-dbbe4bd7 10.152.64.88
```
And here is a tcpdump snippet (some internal info redacted):
```
14:20:45.168346 IP ip-88.1024 > ip-177.8934: UDP, length 240
14:20:48.968555 IP ip-88.1024 > ip-177.8934: UDP, length 53
14:20:49.568379 IP ip-88.1024 > ip-177.8934: UDP, length 311
14:20:49.768495 IP ip-88.1024 > ip-177.8934: UDP, length 339
14:20:49.768650 IP ip-177.8934 > ip-88.1024: UDP, length 153
14:20:51.168599 IP ip-88.1024 > ip-177.8934: UDP, length 189
14:20:53.268708 IP ip-88.1024 > ip-177.8934: UDP, length 49
14:20:54.488489 IP ip-177.8934 > ip-88.amberon: UDP, length 29
14:20:55.568829 IP ip-88.1024 > ip-177.8934: UDP, length 189
14:20:57.968585 IP ip-88.1024 > ip-177.8934: UDP, length 138
14:21:00.768414 IP ip-88.1024 > ip-177.8934: UDP, length 29
14:21:00.768547 IP ip-177.8934 > ip-88.1024: UDP, length 13
14:21:03.368397 IP ip-88.1024 > ip-177.8934: UDP, length 138
14:21:04.268765 IP ip-88.1024 > ip-177.8934: UDP, length 49
14:21:06.369493 IP ip-88.1024 > ip-177.8934: UDP, length 138
```
There are UDP packets in both directions between the join event and failure event
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