unable to obtain neither an IPv4 nor an IPv6 dispatch
Matthew Calder
calderm at usc.edu
Fri Jul 18 18:46:27 UTC 2014
Hi Cathy,
I think you may be correct. I am running these in cloud hosted VMs. I found
that the problem is difficult to reproduce with a 2 core instance. With a 4
core instance it only happens with reload/reconfig and with 8 cores it
doesn't get past start up. From the VM's perspective, I only have 2
interfaces, lo and eth0.
Here is what shows up in the logs for BIND 9.9.5 on start.
Jul 18 18:42:39 named[11861]: adjusted limit on open files from 4096 to
1048576
Jul 18 18:42:39 named[11861]: found 4 CPUs, using 4 worker threads
Jul 18 18:42:39 named[11861]: using 4 UDP listeners per interface
Jul 18 18:42:39 named[11861]: using up to 4096 sockets
Jul 18 18:42:39 named[11861]: loading configuration from
'/etc/bind/named.conf'
Jul 18 18:42:45 named[11861]: reading built-in trusted keys from file
'/etc/bind/bind.keys'
Jul 18 18:42:45 named[11861]: using default UDP/IPv4 port range: [1024,
65535]
Jul 18 18:42:45 named[11861]: using default UDP/IPv6 port range: [1024,
65535]
Jul 18 18:42:45 named[11861]: listening on IPv6 interfaces, port 53
Jul 18 18:42:45 named[11861]: listening on IPv4 interface lo, 127.0.0.1#53
Jul 18 18:42:45 named[11861]: listening on IPv4 interface eth0,
100.67.236.8#53
On Fri, Jul 18, 2014 at 8:20 AM, Cathy Almond <cathya at isc.org> wrote:
> It might have something to do with the number of CPUs that named detects
> when it starts, which (by default) drives how many listening tasks it
> starts per listening interface.
>
> BIND 9.10 changed the defaults slightly, but you can also control how
> many listening tasks per interface using the -U option.
>
> Is there anything else unusual in your test set-up? I notice you said
> that you have 500 views - do you also have a large number of virtual
> interfaces, each with their own listen-on?
>
>
> On 18/07/2014 07:06, Matthew Calder wrote:
> > Thanks Mark. I tried building with increased ISC_SOCKET_MAXSOCKETS with
> > BIND 9.9.5 but I kept seeing the same error. Eventually, I tried BIND
> > 9.10.0 and the error no longer happens.
> >
> >
> > On Wed, Jul 16, 2014 at 3:56 PM, Mark Andrews <marka at isc.org
> > <mailto:marka at isc.org>> wrote:
> >
> >
> > You need to increase ISC_SOCKET_MAXSOCKETS.
> >
> > e.g.
> >
> > ./configure STC_CDEFINES=-DISC_SOCKET_MAXSOCKETS=21000
> >
> > In message
> > <CANcFfBvV2wKtdc-dtZZcecC4giF1nfVGqVQ-KXQGpTEx6++f3Q at mail.gmail.com
> > <mailto:
> CANcFfBvV2wKtdc-dtZZcecC4giF1nfVGqVQ-KXQGpTEx6%2B%2Bf3Q at mail.gmail.com>>
> > , Matthew Calder writes:
> > > --===============1218088129802327245==
> > > Content-Type: multipart/alternative;
> > boundary=089e013a044a72db8004fe551784
> > >
> > > --089e013a044a72db8004fe551784
> > > Content-Type: text/plain; charset=UTF-8
> > >
> > > I'm completely new to BIND configuration. I'm running on BIND
> > > 9.9.5-3-Ubuntu (Extended Support Version) on Ubuntu 14.04 and
> > seeing this
> > > error on startup/reload.
> > >
> > > Jul 15 19:20:57 named[1978]: server.c:2772: unexpected error:
> > > Jul 15 19:20:57 named[1978]: unable to obtain neither an IPv4 nor
> > an IPv6
> > > dispatch
> > >
> > > This happens if I do rndc reload/reconfig. My named.conf.local has
> > > many around 500 views and large match-client ACLs because I am
> > > experimenting with a global split-horizon configuration. I would
> > appreciate
> > > any help.
> > >
> > > --089e013a044a72db8004fe551784
> > > Content-Type: text/html; charset=UTF-8
> > > Content-Transfer-Encoding: quoted-printable
> > >
> > > <div dir=3D"ltr"><div><span
> > style=3D"color:windowtext;line-height:17px;font=
> > > -family:Calibri,Sans-Serif;font-size:11pt"><span
> > style=3D"background-color:=
> > > inherit">I'm completely new to BIND configuration. I'm
> > running on <=
> > > span
> >
> style=3D"color:windowtext;line-height:17px;font-family:Calibri,Sans-Se=
> > > rif;font-size:11pt"><span style=3D"background-color:inherit">BIND
> > 9.9.5-3-U=
> > > buntu (Extended Support Version) on Ubuntu 14.04 and seeing this
> > error on s=
> > > tartup/reload.</span></span></span></span></div>
> > > <div><span
> > style=3D"color:windowtext;line-height:17px;font-family:Calibri,S=
> > > ans-Serif;font-size:11pt"><span
> > style=3D"background-color:inherit"></span><=
> > > /span><br></div><div><span
> > style=3D"color:windowtext;line-height:17px;font-=
> > > family:Calibri,Sans-Serif;font-size:11pt"><span
> > style=3D"background-color:i=
> > > nherit">Jul 15 19:20:57</span><span
> > style=3D"background-color:inherit"> nam=
> > > ed[1978]: server.c:2772: unexpected error:</span></span><span
> > style=3D"line=
> > >
> >
> -height:17px;font-family:Calibri,Sans-Serif;font-size:11pt"><span>=C2=A0</s=
> > > pan><br>
> > > </span><span
> > style=3D"color:windowtext;line-height:17px;font-family:Calibri=
> > > ,Sans-Serif;font-size:11pt"><span
> > style=3D"background-color:inherit">Jul 15=
> > > 19:20:57 </span><span
> > style=3D"background-color:inherit">named[1978]: unab=
> > > le to obtain neither an IPv4 nor an IPv6
> dispatch</span></span></div>
> > > <div><span
> > style=3D"color:windowtext;line-height:17px;font-family:Calibri,S=
> > > ans-Serif;font-size:11pt"><span
> > style=3D"background-color:inherit"></span><=
> > > /span><br></div><div><span
> > style=3D"color:windowtext;line-height:17px;font-=
> > > family:Calibri,Sans-Serif;font-size:11pt"><span
> > style=3D"background-color:i=
> > > nherit"><span
> > style=3D"color:windowtext;line-height:17px;font-family:Calibr=
> > > i,Sans-Serif;font-size:11pt"><span
> > style=3D"background-color:inherit">This =
> > > happens if I do rndc reload/reconfig.
> > </span></span></span></span><span sty=
> > >
> >
> le=3D"color:windowtext;line-height:17px;font-family:Calibri,Sans-Serif;font=
> > > -size:11pt"><span style=3D"background-color:inherit">My
> > named.conf.local ha=
> > > s many=C2=A0around=C2=A0500 views=C2=A0and large match-client ACLs
> > because =
> > > I am experimenting with a global split-horizon configuration. I
> > would appre=
> > > ciate any help.</span></span></div>
> > > </div>
> > >
> > > --089e013a044a72db8004fe551784--
> > >
> > > --===============1218088129802327245==
> > > Content-Type: text/plain; charset="us-ascii"
> > > MIME-Version: 1.0
> > > Content-Transfer-Encoding: 7bit
> > > Content-Disposition: inline
> > >
> > > _______________________________________________
> > > Please visit https://lists.isc.org/mailman/listinfo/bind-users to
> > unsubscribe
> > > from this list
> > >
> > > bind-users mailing list
> > > bind-users at lists.isc.org <mailto:bind-users at lists.isc.org>
> > > https://lists.isc.org/mailman/listinfo/bind-users
> > > --===============1218088129802327245==--
> > --
> > Mark Andrews, ISC
> > 1 Seymour St., Dundas Valley, NSW 2117, Australia
> > PHONE: +61 2 9871 4742 <tel:%2B61%202%209871%204742>
> > INTERNET: marka at isc.org <mailto:marka at isc.org>
> >
> >
> >
> >
> > _______________________________________________
> > Please visit https://lists.isc.org/mailman/listinfo/bind-users to
> unsubscribe from this list
> >
> > bind-users mailing list
> > bind-users at lists.isc.org
> > https://lists.isc.org/mailman/listinfo/bind-users
> >
>
> _______________________________________________
> Please visit https://lists.isc.org/mailman/listinfo/bind-users to
> unsubscribe from this list
>
> bind-users mailing list
> bind-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/bind-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/bind-users/attachments/20140718/edc4fd51/attachment-0001.html>
More information about the bind-users
mailing list