"net.c:577: sendmsg() failed: Operation not permitted" in dig Output

I am running Bind 9.10.2 version on CentOS 6.6 machine. While running the dig command, i am getting "net.c:577: sendmsg() failed: Operation not permitted" notification.

dig utility is giving me an answer but on the top, it shows this notification.

$dig nkn.in +short   
**net.c:577: sendmsg() failed: Operation not permitted**  
164.100.129.98

System Information :-  
cat /etc/*-release   
CentOS release 6.6 (Final)   
LSB_VERSION=base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch    
CentOS release 6.6 (Final)   
CentOS release 6.6 (Final)

Can some one please help me out why i am getting this notification?

IPv6 firewall rules sets:-

*filter  
:INPUT DROP [0:0]  
:FORWARD DROP [0:0]  
:OUTPUT DROP [0:0]  
:LOGGING - [0:0]  
-A INPUT -i lo -j ACCEPT  
-A INPUT -p icmpv6 -j ACCEPT   
-A INPUT -p udp --dport 5353 -d ff02::fb -j ACCEPT  
-A INPUT -p udp -m udp --dport 631 -j ACCEPT  
-A INPUT -p tcp -m tcp --dport 631 -j ACCEPT  
-A INPUT -p udp -m udp --dport 53 -j ACCEPT  
-A INPUT -p tcp -m tcp --dport 53 -j ACCEPT  
-A OUTPUT -p icmpv6 --icmpv6-type echo-reply -j ACCEPT  
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT  
-A INPUT -m udp -p udp --sport 1812 -j ACCEPT  
-A INPUT -m udp -p udp --sport 1813 -j ACCEPT 
-A INPUT -s fe80::/64 -j ACCEPT  
-A INPUT -s ff02::/64 -j ACCEPT  
-A INPUT -j LOG --log-prefix "IP6Tables:INPUT " --log-level 7  
-A OUTPUT -p udp -m udp --dport 53 -j ACCEPT  
-A OUTPUT -p tcp -m tcp --dport 53 -j ACCEPT  
-A OUTPUT -p icmpv6 -j ACCEPT  
-A OUTPUT -p icmpv6 --icmpv6-type echo-request -j ACCEPT  
-A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT  
-A OUTPUT -d 2001:db8::/32 -j ACCEPT  
-A OUTPUT -d fe80::/64 -j ACCEPT  
-A OUTPUT -d ff02::/64 -j ACCEPT  
-A OUTPUT -j LOG --log-prefix "IP6Tables:OUTPUT " --log-level 7  
-A LOGGING -m limit --limit 2/min -j LOG --log-prefix "IP6Tables-Dropped: "  
-A LOGGING -j DROP  
COMMIT  

In my arch linux it helped adding an ip6tables firewall rule to allow sending local udp packets from localhost to localhost:

ip6tables -I OUTPUT 1 -p udp -s 0000:0000:0000:0000:0000:0000:0000:0001 \ 
-d 0000:0000:0000:0000:0000:0000:0000:0001 -j ACCEPT

Have you tried to reach that destination with any other protocol? Like ICMP?

This error might indicate that you have no rights to do that action, or either blocked by a firewall rule.