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Dear Xrootd Developers,

Here at T2_US_Wisconsin, we are using xroot-4.0.4 OSG 32 released version. We are seeing problems with cmsd.log for all of our supervisor nodes. 

/var/log/xrootd/cmsd.log repeats these messages,

141120 15:19:47 12849 setOpts: Unable to set socket NODELAY; operation not supported
141120 15:19:47 12849 Inet: Accepted connection from 7@localhost
141120 15:19:47 12849 Login: localhost login failed; blacklisted


and /var/log/xrootd/xrootd.log repeats this one :

141120 15:35:23 12755 cms_Login: localhost login failed; localhost is blacklisted

As a result we have limited number of servers without the supervisors.  All our xrootd servers, redirector and supervisors have dual stack IPv6/v4 network.
Any help to understand and solve the problem is appreciated. Let us know if you need more information from us.


Thanks
-Tapas


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