[Samba] strange: Failed DNS update - NT_STATUS_IO_TIMEOUT

L.P.H. van Belle belle at bazuin.nl
Mon Jan 19 03:30:00 MST 2015

Im seeing something very strange.  ( Debian wheezy, sernet-samba 4.1.14 ) 
after update-ing my debian servers and restarting them, im see-ing the following on my ADDC2.
[2015/01/19 11:09:10.422641,  0] ../source4/dsdb/dns/dns_update.c:294(dnsupdate_nameupdate_done)
  ../source4/dsdb/dns/dns_update.c:294: Failed DNS update - NT_STATUS_IO_TIMEOUT
I checked the SOA's of the DNS and both are the same. 
And, besides above i see no errors, and as fare as i know/can see, everything is working fine. 
stopping sernet-samba-ad and bind and starting them again did not solve this error. 
anyone any tips, where to look next. 
Running : 
samba-tool  drs showrepl on both DC's, all successfull, and no errors. 
same, with : 
samba-tool  ldapcmp --filter="whenChanged" ldap://rtd-dc1 ldap://rtd-dc2 -d0
All successfull, and no errors. 
so i anyone has any suggestion. 
Nothing has changed in my setup, which was running fine. ( and looks like it, it still is) 

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