Hi @SCB21,
Are you referring to any specific log? It's PII information and Adobe's Platform is privacy certified hence it will not store the info in any log files.
Here additional information around IP - While configuring the datastream, you can enable the Geo Location option to City to capture the IP Address. From datastream, if you have added a service to forward to Adobe Analytics, the IP fields will get populated automatically in the field that @Anil_Umachigi mentioned.
I am assuming you are using datastream, if not please let me know, and we can guide you appropriately.
Regards,
Chetanya Jain