socket.c:2135: unexpected error:

[Mark Andrews]

Check the firewall settings. Invalid argument is indicative of a misconfigured firewall. 

-- 
Mark Andrews

> On 5 Jun 2018, at 12:57, hotta at iij.ad.jp wrote:
> 
> 
> Hi,
> 
> After upgrading BIND from 9.9.9-P5 to 9.11.3., the following messages
> have been displayed continuously in the file /var/log/messages as below.
> 
> ---------
> May 29 02:36:50 dns01 nanny[5609]: debug start 1
> May 29 02:37:08 dns01 named[1679]: socket.c:2135: unexpected error:
> May 29 02:37:08 dns01 named[1679]: internal_send: [global IPv6 address]#38306: Invalid argument
> May 29 02:37:20 dns01 nanny[5617]: debug start 1
> May 29 02:37:24 dns01 named[1679]: socket.c:2135: unexpected error:
> May 29 02:37:24 dns01 named[1679]: internal_send: [global IPv6 address]#36987: Invalid argument
> May 29 02:37:47 dns01 named[1679]: socket.c:2135: unexpected error:
> May 29 02:37:47 dns01 named[1679]: internal_send: [global IPv6 address]#35862: Invalid argument
> May 29 02:37:48 dns01 named[1679]: socket.c:2135: unexpected error:
> May 29 02:37:48 dns01 named[1679]: internal_send: [global IPv6 address]#39895: Invalid argument
> May 29 02:37:50 dns01 nanny[5632]: debug start 1
> May 29 02:38:00 dns01 named[1679]: socket.c:2135: unexpected error:
> May 29 02:38:00 dns01 named[1679]: internal_send: [global IPv6 address]#38979: Invalid argument 
> :
> ---------
> 
> OS  : Red Hat Enterprise Linux Server 6.5
> 
> DNS service seems to be working fine, but I don't understand the cause
> and how to fix the errors.
> 
> Any advice would be greatly appreciated.
> 
> 
> Regards,
> Hotta
> 
> 
> 
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