Michal, just curiosity, what differs between `XRD_PREFERIPV4` versus `XRD_NETWORKSTACK=IPv4`? That's what actually worked when we used `XRD_NETWORKSTACK=IPv4 xrdcp ...` from Mat's client. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/644#issuecomment-358807818 ######################################################################## 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