Hi,
We are trying to build/run CMS offline software (CMSSW) for CentOS Stream9. We are using
GCC: 11.2.1
OS: CentOS Stream9 beta
Arch: x86_64
xrootd: 5.4.2 , see https://github.com/cms-sw/cmsdist/blob/IB/CMSSW_12_4_X/cs9/xrootd.spec#L31-L47 how it is configured and built

This works fine for CS8/CentOS7 but on CS9 we get the following error [a] at runtime. Any idea what might be wrong here? Are we missing any build option?

[a]

22-Mar-2022 15:06:20 CET  Initiating request to open file root://eoscms.cern.ch//eos/cms/store/user/cmsbuild/store/relval/CMSSW_9_2_4/RelValMinBias/GEN-SIM/91X_mcRun1_realistic_v2-v1/00000/70B79BB2-D561-E711-AD2C-0CC47A7C3628.root
Plugin No such file or directory loading sec.protocol libXrdSeckrb5-5.so
220322 15:06:21 15196 secgsi_ClientDoCert: could not instantiate session cipher using cipher public info from server
[2022-03-22 15:06:21.019463 +0100][Error  ][XRootDTransport   ] [eoscms.cern.ch:1094.0] Auth protocol handler for gsi refuses to give us more credentials Secgsi: ErrParseBuffer: could not instantiate session cipher : kXGS_cert
[2022-03-22 15:06:21.019577 +0100][Error  ][AsyncSock         ] [eoscms.cern.ch:1094.0] Socket error while handshaking: [FATAL] Auth failed
[2022-03-22 15:06:21.019664 +0100][Error  ][PostMaster        ] [eoscms.cern.ch:1094] elapsed = 1, pConnectionWindow = 31 seconds.
Plugin No such file or directory loading sec.protocol libXrdSeckrb5-5.so
220322 15:06:21 15196 secgsi_ClientDoCert: could not instantiate session cipher using cipher public info from server
[2022-03-22 15:06:21.128617 +0100][Error  ][XRootDTransport   ] [eoscms.cern.ch:1094.0] Auth protocol handler for gsi refuses to give us more credentials Secgsi: ErrParseBuffer: could not instantiate session cipher : kXGS_cert
[2022-03-22 15:06:21.128690 +0100][Error  ][AsyncSock         ] [eoscms.cern.ch:1094.0] Socket error while handshaking: [FATAL] Auth failed
[2022-03-22 15:06:21.128765 +0100][Error  ][PostMaster        ] [eoscms.cern.ch:1094] elapsed = 0, pConnectionWindow = 31 seconds.
[2022-03-22 15:06:21.128902 +0100][Error  ][PostMaster        ] [eoscms.cern.ch:1094] Unable to recover: [FATAL] Auth failed.
[2022-03-22 15:06:21.128932 +0100][Error  ][XRootD            ] [eoscms.cern.ch:1094] Impossible to send message kXR_prepare (flags: kXR_stage , priority: 0, paths: /eos/cms/store/user/cmsbuild/store/relval/CMSSW_9_2_4/RelValMinBias/GEN-SIM/91X_mcRun1_realistic_v2-v1/00000/70B79BB2-D561-E711-AD2C-0CC47A7C3628.root). Trying to recover.
[2022-03-22 15:06:21.129007 +0100][Error  ][XRootD            ] [eoscms.cern.ch:1094] Impossible to send message kXR_prepare (flags: kXR_stage , priority: 0, paths: /eos/cms/store/user/cmsbuild/store/relval/CMSSW_9_2_4/RelValMinBias/GEN-SIM/91X_mcRun1_realistic_v2-v1/00000/C8F71BD6-D561-E711-A213-0025905B8592.root). Trying to recover.

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