Not all logs are being sent by syslog-loggly plugin

[reswob10]

Very simple config:

input {

    stdin {}

}

filter {

    csv {
            columns => ["user","ip","os"]
    }

}

output {

    stdout {codec => rubydebug}

    syslog {
            host => "1.1.12.5"
        port => "5514"
        protocol => "udp"
            codec => "json"

    }

}

used this as the input:

craig,,Win7

and entered it six times.

This showed up as the stdout:

craig,,Win7
{
"@Version" => "1",
"ip" => nil,
"host" => "0.0.0.0",
"@timestamp" => 2019-04-17T16:05:55.191Z, <----- received
"user" => "craig",
"message" => "craig,,Win7",
"os" => "Win7"
}
craig,,Win7
{
"@Version" => "1",
"ip" => nil,
"host" => "0.0.0.0",
"@timestamp" => 2019-04-17T16:06:05.361Z, <-----missing
"user" => "craig",
"message" => "craig,,Win7",
"os" => "Win7"
}
craig,,Win7
{
"@Version" => "1",
"ip" => nil,
"host" => "0.0.0.0",
"@timestamp" => 2019-04-17T16:06:13.033Z, <----- received
"user" => "craig",
"message" => "craig,,Win7",
"os" => "Win7"
}
craig,,Win7
{
"@Version" => "1",
"ip" => nil,
"host" => "0.0.0.0",
"@timestamp" => 2019-04-17T16:06:34.080Z, <----- missing
"user" => "craig",
"message" => "craig,,Win7",
"os" => "Win7"
}
craig,,Win7
{
"@Version" => "1",
"ip" => nil,
"host" => "0.0.0.0",
"@timestamp" => 2019-04-17T16:06:36.672Z, <------- received
"user" => "craig",
"message" => "craig,,Win7",
"os" => "Win7"
}
craig,,Win7
{
"@Version" => "1",
"ip" => nil,
"host" => "0.0.0.0",
"@timestamp" => 2019-04-17T16:07:07.161Z, <----- missing
"user" => "craig",
"message" => "craig,,Win7",
"os" => "Win7"
}

BUT, at the receiving end, I got this:

12:05:55.894818 IP 1.1.2.35.50017 > 1.1.12.5.5514: UDP, length 176
E.....@.>.eG
e.#
e...a....o.<13>Apr 17 16:05:55 0.0.0.0 LOGSTASH[-]: {"@Version":"1","ip":null,"host":"0.0.0.0","@timestamp":"2019-04-17T16:05:55.191Z","user":"craig","message":"craig,,Win7","os":"Win7"}
................
12:06:13.140318 IP 1.1.2.35.50017 > 1.1.12.5.5514: UDP, length 176
E.....@.>.eF
e.#
e...a....r.<13>Apr 17 16:06:13 0.0.0.0 LOGSTASH[-]: {"@Version":"1","ip":null,"host":"0.0.0.0","@timestamp":"2019-04-17T16:06:13.033Z","user":"craig","message":"craig,,Win7","os":"Win7"}
................
12:06:36.780246 IP 1.1.2.35.50017 > 1.1.12.5.5514: UDP, length 176
E.....@.>.eE
e.#
e...a....g.<13>Apr 17 16:06:36 0.0.0.0 LOGSTASH[-]: {"@Version":"1","ip":null,"host":"0.0.0.0","@timestamp":"2019-04-17T16:06:36.672Z","user":"craig","message":"craig,,Win7","os":"Win7"}
0 sourceTranslat

Shouldn't I have received 6 logs, not 3?

Note the @timestamps.

I'm on CentOS 6.10, version 7.0 of LS and version 0.1.0 of logstash-output-syslog-loggly

I am NOT sending this to loggly, just another syslog server. I was trying your plugin because I was having issues with the syslog plugin.