Hello Andy, Using `gfal-copy` with `-v` option will print out the IP event. Example: ``` event: [1663058803002] DEST http_plugin IPV6 TRUE ``` This will only show up during a larger transfers, which goes on for a couple seconds or more. The example you've provided is for HTTP-TPC transfers. The initial request was to identify the IP stack for XRoot TPC transfers. I take it this is the final response? > BTW we won't be doing the same for xroot protocol as most places are switching to http for this. -- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/1471#issuecomment-1245099870 You are receiving this because you are subscribed to this thread. Message ID: <[log in to unmask]> ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1