TCP input host field contains source port

Hello,

When I enable TCP input and send syslog messages to logstash the host field which on the UDP input is just IP becomes IP:SPORT.

In the output folder I see;

drwxr-xr-x 2 root logstash 4096 Jan 30 21:35 82.71.1.2:43918
drwxr-xr-x 2 root logstash 4096 Jan 30 21:34 82.71.1.3:59971
drwxr-xr-x 2 root logstash 4096 Jan 30 21:34 82.71.1.4:59863

Where as normally it is just IP.

Config

# File managed by puppet
input {
# File managed by puppet
  udp {
  	port => 514
    type => "syslog"
  }
 # File managed by puppet
  tcp {
  	port => 514
    type => "syslog"
  }
 # File managed by puppet
}
# File managed by puppet

output {

# File managed by puppet

  file {
        type => "syslog"
		message_format  => "%{message}"
		path => "/opt/syslog/%{host}/all.log"
  }
}