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<div>Hi all,<br /><br />In my (small) home setup I have been running for a couple years pdns/pnds-recursor. The pdns with the gmysql backend.<br /><br />Initially on ubuntu and recently on Centos7. In both instances I receive these, as shown below, syslog messages a couple times a day. The total amount of queries is low, as it's a home network. <br /><br />Jun 15 04:12:03 emani pdns[2228]: Unable to send a packet to our recursing backend: Operation not permitted<br />Jun 15 04:59:04 emani pdns[2228]: Unable to send a packet to our recursing backend: Operation not permitted<br /><br />A google and maillist search turned up some "Unable to send packet" but none with the reason "Operation not permitted"<br /><br />Additionally I couldn't find documentation how to log these failed/denied queries.<br /><br />No issue getting my hands dirty :-) and dig through logs (or code, but far from c expert), how to obtain some further logging why this is denied?<br /><br />Current info on distro and version:<br /> <br />[emani ~]$ cat /etc/redhat-release <br />Red Hat Enterprise Linux Server release 7.0 (Maipo) <br />[emani ~]$ rpm -qi pdns <br />Name : pdns <br />Version : 3.4.8 <br />Release : 1.el7 <br />Architecture: x86_64 <br />Install Date: Thu May 26 23:42:07 2016 <br />Group : System Environment/Daemons <br />Size : 8561959 <br />License : GPLv2 <br />Signature : RSA/SHA256, Thu Feb 4 19:41:53 2016, Key ID 6a2faea2352c64e5 <br />Source RPM : pdns-3.4.8-1.el7.src.rpm <br />Build Date : Wed Feb 3 18:59:43 2016 <br />Build Host : buildvm-19-nfs.phx2.fedoraproject.org <br /><<snip>><br /><br />[emani ~]$ /usr/sbin/pdns_server --version<br />Jun 16 03:31:11 PowerDNS Authoritative Server 3.4.8 (jenkins@autotest.powerdns.com) (C) 2001-2015 PowerDNS.COM BV<br />Jun 16 03:31:11 Using 64-bits mode. Built on 20160203175745 by mockbuild@buildvm-19-nfs.phx2.fedoraproject.org, gcc 4.8.5 20150623 (Red Hat 4.8.5-4).<br />Jun 16 03:31:11 PowerDNS comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it according to the terms of the GPL version 2.<br />Jun 16 03:31:11 Features: cryptopp libdl lua remotebackend-zeromq<br />Jun 16 03:31:11 Built-in modules: <br /><br />[emani ~]# grep -v -e ^# -e ^$ /etc/pdns/pdns.conf<br />allow-recursion=127.0.0.0/8, 192.168.0.0/16, ::1/128, fe80::/10, 2001:610:600:89c2::/64<br />daemon=yes<br />disable-axfr=yes<br />distributor-threads=3<br />guardian=yes<br />launch=gmysql<br />local-address=127.0.0.1,192.168.5.5<br />local-ipv6=::1,2001:610:600:89c2::5:5<br />local-port=53<br />recursor=127.0.0.1:54<br />reuseport=no<br />security-poll-suffix=secpoll.powerdns.com.<br />send-root-referral=no<br />setgid=pdns<br />setuid=pdns<br />gmysql-host=<<removed>><br />gmysql-port=<br />gmysql-dbname=pdns<br />gmysql-user=<<removed>><br />gmysql-password=<<removed>><br />gmysql-dnssec=yes<br />gmysql-socket=/var/lib/mysql/mysql.sock<br /><br /><br />Thanks in advance,<br />Stijn</div>
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