Hi, I'm trying to upgrade our xcache servers to 5.6.4 (had 5.4.2 before). Normal functionality seems to work, but i see an issue with the rucioN2N plugin when it try to pass a rucio logical file name, e.g. with a server running on localhost xrdcp -f root://localhost:1094//atlas/rucio/mc23_13p6TeV:DAOD_PHYSLITE.35040162._000001.pool.root.1 /dev/null This leads to a crash with segfault of the xrootd server. I attached a log of some gdb debug info that i tried to produce. Looks like the issue is that qryResponse stays a null pointer. The issue should be reproducible without access to ATLAS data since this happens before it actually parses the url from the metalink file. Not sure which xrootd version is the last one where it works, but i can try to find it out if that helps. Best, Nikolai ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1