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Hi Marian, I see that the cluster configuration for cmsxrootd.fnal.gov is: 0: [::ffff:129.93.239.131] xrootd.unl.edu v4.3.0 1: [::ffff:131.225.204.174] cmsxrootd1.fnal.gov v4.3.0-rc3 2: [2600:900:6:1101:5054:ff:fe00:70cb] xrootd.unl.edu v4.3.0 Any particular reason why the fnal one is not on a supported version of xrootd? In any case, I will look to see if we addressed this issue in 4.4.0. In the mean time, could you do: xrdfs cmsxrootd.fnal.gov:1094 locate -h <the_problem_path> and return the result to me? I can't do it as it appears you have turned on access control for the locate command. Andy B.T.W Version 4.4.0 is much better than 4.3.0 so you should consider upgrading. On Fri, 2 Sep 2016, Marian Zvada wrote: > Hello! > > We're experiencing issues with older clients vs redirector IPv6 enabled where client host is dual-stack. Relevant piece of behavior is from the log as follows: > > `[2016-09-02 19:40:10.529888 +0200][Debug ][XRootDTransport ] [cmsxrootd.fnal.gov:1094 #0.0] Sending out kXR_login request, username: zvada, cgi: ?xrd.cc=ch&xrd.tz=1&xrd.appname=xrdcp&xrd.info=, dual-stack: false` > ... > ... > ``` > [2016-09-02 19:41:00.221320 +0200][Debug ][File ] [0x2000000@root://cmsxrootd.fnal.gov:1094//store/mc/RunIISpring16reHLT80/DYJetsToLL_M-50_TuneCUETP8M1_13TeV-amcatnloFXFX-pythia8/AODSIM/PUSpring16RAWAODSIM_reHLT_80X_mcRun2_asymptotic_v14-v1/40000/003A70D5-E55C-E611-9B14-0025905C53A8.root] Error while opening at cms-xrd-transit.cern.ch:1094: [ERROR] Server responded with an error: [3011] No servers are available to read the file. > [0B/0B][100%][==================================================][0B/s] > Run: [ERROR] Server responded with an error: [3011] No servers are available to read the file. > $ xrdcp -version > v4.0.4 > ``` > Forcing XRD_NETWORKSTACK=IPv4 solve the issue on client side, though: > ``` > $ XRD_NETWORKSTACK=IPv4 xrdcp -f root://cmsxrootd.fnal.gov//store/mc/RunIISpring16reHLT80/DYJetsToLL_M-50_TuneCUETP8M1_13TeV-amcatnloFXFX-pythia8/AODSIM/PUSpring16RAWAODSIM_reHLT_80X_mcRun2_asymptotic_v14-v1/40000/003A70D5-E55C-E611-9B14-0025905C53A8.root /dev/null > [80MB/3.495GB][ 2%][=> ][8.889MB/s] > $ xrdcp -version > v4.0.4 > ``` > Suggestion is provide on the server side a configuration parameter to force dual-stack to true - we'd assume that IPv4 is always present. Clients >=v4.3.x handle dual-stack situation well, but for users running anything below that would be preferable be cautions and act on the server side with config tweak if possible. > > Thanks, > Marian > > -- > 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/411 -- 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/411#issuecomment-244466567 ######################################################################## 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