I think these addresses are used in the example.pcap (/opt/pcap-replay/example.pcap). The fact that you're receiving this means that pcap-replay is probably running in the background. You can check this with Monit ("monit summary").
On 2017-09-20 07:29, Frank Horsfall wrote: > Morning all, > > I have several logs showing an address of 192.168.138.158 as ip_src_addr and > 192.168.138.2 as ip_dst_addr. > > My internal network does not have the 192.168.0.0/24 range which leads me to > believe that somewhere there is a test record with the data. > > Would anybody know where I might be able to find it? > > Frank