The following three IP addresses appear in my traffic log as my local IP address when none of these three match my IP address.
126.96.36.199 (AT&T Internet Services )
188.8.131.52 (Frontier Communications of America, Inc.)
both of these contacting the same IP address at my ISP
184.108.40.206 (RIPE Network Coordination Centre)
also contacting my ISP but but a different IP at my ISP
For the visual effect I get in the two columns of Local Address and Remote Address, my local IP address looks like it's being faked.
So I write this and go back and check the updated log and here's another contacting an IP at my ISP:
220.127.116.11 (Latin American and Caribbean IP address Regional Registry)
Yet another is using a different local IP address (an IP registered to my ISP as a local IP address contacting an IP address at my ISP)
None of these are my real local IP address.
Since at least two of those appear to be Internet Registry authorities, are you running some kind of Internet service from your home? A Web Server, FTP, email, something like that?
This could be something dangerous, but odds are it's simple Internet management traffic (a Web crawler, dns updates, something like that).