How to determine the host on which the packet capture was run


I am looking at some tcpdumps in wire shark and want to know the host name/ip address of the host where the packets were captured from. Anyone know how to find this ?

So far I only see src and dest ip.

This is important to me because iam troubleshooting a latency problem a customer is having and need to know if the host on which the tcpdump was captured is the same host on which a web service they have is running.

Thanks in advance,