Bind IPV6 issue
Hrant Dadivanyan
hrant at dadivanyan.com
Thu Jul 9 14:06:32 UTC 2020
Hi Duleep,
Any process running as non-root user can't bind to a port lower than
1024 (53 in your case), so if you change process uid on start (named -u)
then stop the named process and start anew.
Thank you,
Hrant
On 2020-07-09 14:56, Duleep Thilakarathne wrote:
> Hi Anand,
>
> Yes netstat -upan only shows only ipv4 address listen :53. But sever
> listens for ipv6 SSH port. So i can confirm IPV6 working fine in server.
> But not for udp port 53.
>
> Regards
> DT
>
> On Thu, 9 Jul 2020, 14:58 Anand Buddhdev, <anandb at ripe.net
> <mailto:anandb at ripe.net>> wrote:
>
> On 09/07/2020 11:01, Duleep Thilakarathne wrote:
>
> Hi Duleep,
>
> > I have configured bind with IPV6 support enabled. However bind
> does not
> > listen to IPV6 address. Any particular reason.is
> <http://reason.is> there any place to enable
> > IPV6 support other than named.conf.
> >
> > Version : BIND 9.11.4-P1 (Extended Support Version)
> >
> > in named.conf file
> >
> > listen-on-v6 { any; };
>
> This should work. But how do you know that BIND does not listen on IPv6
> addresses? Did you check using "ss -lunp" or "netstat -upan"?
>
> Regards,
> Anand
>
>
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