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Today's Topics:
1. Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address" (Christian Kratzer)
2. Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address" (Marc Haber)
3. Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address" (Christian Kratzer)
4. Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address" (Brice Abba)
5. Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address" (Marc Haber)
6. Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address" (Brice Abba)
----------------------------------------------------------------------
Message: 1
Date: Tue, 21 Nov 2017 10:15:06 +0100 (CET)
From: Christian Kratzer <ck-li...@cksoft.de>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address"
Message-ID: <alpine.bsf.2.21.1711211014200.30...@nocfra1.cksoft.de>
Content-Type: text/plain; charset=US-ASCII; format=flowed
Hi,
On Tue, 21 Nov 2017, Brice Abba wrote:
> Hi Marc,
>
> Insert your host IPs in the subnet6 declaration as shown and try:
>
> subnet6 2a01:238:4071:3281::/64 {
> host oversway {
> host-identifier option
> dhcp6.client-id 0:2:0:0:ab:11:a8:7c:5e:5d:25:dd:92:2e;
> fixed-address6 2a01:238:4071:3281::6b:100;
> }
> }
how is that supposed to make a difference. I was under the impression that
hosts are globally scoped.
Greetings
Christian
--
Christian Kratzer CK Software GmbH
Email: c...@cksoft.de Wildberger Weg 24/2
Phone: +49 7032 893 997 - 0 D-71126 Gaeufelden
Fax: +49 7032 893 997 - 9 HRB 245288, Amtsgericht Stuttgart
Mobile: +49 171 1947 843 Geschaeftsfuehrer: Christian Kratzer
Web: http://www.cksoft.de/
------------------------------
Message: 2
Date: Tue, 21 Nov 2017 11:21:31 +0100
From: Marc Haber <mh+dhcp-us...@zugschlus.de>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address"
Message-ID: <20171121102131.edxhwdiwfpfka...@torres.zugschlus.de>
Content-Type: text/plain; charset=utf-8
On Tue, Nov 21, 2017 at 10:15:06AM +0100, Christian Kratzer wrote:
> On Tue, 21 Nov 2017, Brice Abba wrote:
>
> > Hi Marc,
> >
> > Insert your host IPs in the subnet6 declaration as shown and try:
> >
> > subnet6 2a01:238:4071:3281::/64 {
> > host oversway {
> > host-identifier option
> > dhcp6.client-id 0:2:0:0:ab:11:a8:7c:5e:5d:25:dd:92:2e;
> > fixed-address6 2a01:238:4071:3281::6b:100;
> > }
> > }
>
> how is that supposed to make a difference. I was under the impression that
> hosts are globally scoped.
And, additionally, it's not the hosts that do have a host declaration
that cause the problem, it's the hosts that don't. I don't think that
this will help at all.
Oh, btw, my apologies for not cleaning out the References Headers from
my initial message, I didn't mean to hijack a thread. Just fat fingers.
Greetings
Marc
--
-----------------------------------------------------------------------------
Marc Haber | "I don't trust Computers. They | Mailadresse im Header
Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402
Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421
------------------------------
Message: 3
Date: Tue, 21 Nov 2017 11:28:41 +0100 (CET)
From: Christian Kratzer <ck-li...@cksoft.de>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address"
Message-ID: <alpine.bsf.2.21.1711211125010.30...@nocfra1.cksoft.de>
Content-Type: text/plain; charset=US-ASCII; format=flowed
Hi
On Tue, 21 Nov 2017, Marc Haber wrote:
<snipp/>
> Since the radvd advertises the networks as managed, all clients send
> DHCP requests, and the server logs for each of those requests:
>
> Nov 21 08:54:59 chasse dhcpd[763]: Solicit message from
> fe80::5054:ff:fe17:2fe7 port 546, transaction ID 0x811FA800
> Nov 21 08:54:59 chasse dhcpd[763]: DHCP6-RELAY client-id:
> 0:2:0:0:ab:11:f6:cb:ae:dd:18:d1:73:c1, interface-id: , remote-id:
> Nov 21 08:54:59 chasse dhcpd[763]: Unable to pick client address: no IPv6
> pools on this shared network
> Nov 21 08:54:59 chasse dhcpd[763]: Sending Reply to fe80::5054:ff:fe17:2fe7
> port 546
>
> These seriously clutter up my logs, can I tell the server that it should
> ignore DHCP solicit messages from clients that it doesn't have static
> configuration for? Or is it better to shrug and to have the DHCPv6
> server assign a "dynamic" IP address?
ich checked in the isc dhcp 4.3.5 sources where the respective log messages
comes from dhcpv6.c
1252 /*!
1253 *
1254 * \brief Get an IPv6 address for the client.
1255 *
1256 * Attempt to find a usable address for the client. We walk through
1257 * the ponds checking for permit and deny then through the pools
1258 * seeing if they have an available address.
1259 *
1260 * \param reply = the state structure for the current work on this request
1261 * if we create a lease we return it using reply->lease
1262 *
1263 * \return
1264 * ISC_R_SUCCESS = we were able to find an address and are returning a
1265 * pointer to the lease
1266 * ISC_R_NORESOURCES = there don't appear to be any free addresses. This
1267 * is probabalistic. We don't exhaustively try the
1268 * address range, instead we hash the duid and if
1269 * the address derived from the hash is in use we
1270 * hash the address. After a number of failures we
1271 * conclude the pool is basically full.
1272 */
1273 static isc_result_t
1274 pick_v6_address(struct reply_state *reply)
1275 {
...
...
...
1306 /* If we get here and p is NULL we have no useful pools */
1307 if (p == NULL) {
1308 log_debug("Unable to pick client address: "
1309 "no IPv6 pools on this shared network");
1310 return ISC_R_NORESOURCES;
1311 }
it looks to me you have very few options to stop the message.
1. add a pool to the subnet, perhaps just having a pool with deny all could help
2. uncomment the log_debug() and recompile
3. just ignore the message as it does not apply to your configuration
Greetings
Christian
--
Christian Kratzer CK Software GmbH
Email: c...@cksoft.de Wildberger Weg 24/2
Phone: +49 7032 893 997 - 0 D-71126 Gaeufelden
Fax: +49 7032 893 997 - 9 HRB 245288, Amtsgericht Stuttgart
Mobile: +49 171 1947 843 Geschaeftsfuehrer: Christian Kratzer
Web: http://www.cksoft.de/
------------------------------
Message: 4
Date: Tue, 21 Nov 2017 14:29:28 +0400
From: Brice Abba <bricea...@gmail.com>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address"
Message-ID:
<CABYY8cZq_fE9kw8eMW9Nj+TuxdVpt4cvcsBTKCHA-Xd-=6i...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
This can help to fix this error message:
Nov 21 08:54:59 chasse dhcpd[763]: Unable to pick client address: no IPv6
pools on this shared network
2017-11-21 14:21 GMT+04:00 Marc Haber <mh+dhcp-us...@zugschlus.de>:
> On Tue, Nov 21, 2017 at 10:15:06AM +0100, Christian Kratzer wrote:
> > On Tue, 21 Nov 2017, Brice Abba wrote:
> >
> > > Hi Marc,
> > >
> > > Insert your host IPs in the subnet6 declaration as shown and try:
> > >
> > > subnet6 2a01:238:4071:3281::/64 {
> > > host oversway {
> > > host-identifier option
> > > dhcp6.client-id 0:2:0:0:ab:11:a8:7c:5e:5d:25:dd:92:2e;
> > > fixed-address6 2a01:238:4071:3281::6b:100;
> > > }
> > > }
> >
> > how is that supposed to make a difference. I was under the impression
> that hosts are globally scoped.
>
> And, additionally, it's not the hosts that do have a host declaration
> that cause the problem, it's the hosts that don't. I don't think that
> this will help at all.
>
> Oh, btw, my apologies for not cleaning out the References Headers from
> my initial message, I didn't mean to hijack a thread. Just fat fingers.
>
> Greetings
> Marc
>
> --
> ------------------------------------------------------------
> -----------------
> Marc Haber | "I don't trust Computers. They | Mailadresse im Header
> Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402
> Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421
> _______________________________________________
> dhcp-users mailing list
> dhcp-users@lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users
>
--
------------------------------
Brice ABBA
www.afrinic.net
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Message: 5
Date: Tue, 21 Nov 2017 11:36:02 +0100
From: Marc Haber <mh+dhcp-us...@zugschlus.de>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address"
Message-ID: <20171121103602.anulkwfp2byxg...@torres.zugschlus.de>
Content-Type: text/plain; charset=utf-8
On Tue, Nov 21, 2017 at 02:29:28PM +0400, Brice Abba wrote:
> This can help to fix this error message:
>
> Nov 21 08:54:59 chasse dhcpd[763]: Unable to pick client address: no IPv6
> pools on this shared network
That's a negative, sir.
Nov 21 11:33:25 chasse systemd[1]: Starting ISC DHCP Server for IPv6 (dhcpd6.con
f)...
Nov 21 11:33:25 chasse dhcpd[3428]: WARNING: Host declarations are global. They
are not limited to the scope you declared them in.
Nov 21 11:33:25 chasse dhcpd[3428]: DHCP6-RELAY client-id: , interface-id: , rem
ote-id:
Nov 21 11:33:25 chasse systemd[1]: Started ISC DHCP Server for IPv6
(dhcpd6.conf).
Nov 21 11:33:25 chasse dhcpd[3430]: WARNING: Host declarations are global.
They are not limited to the scope you declared them in.
Nov 21 11:33:25 chasse dhcpd[3430]: DHCP6-RELAY client-id: , interface-id: ,
remote-id:
Nov 21 11:33:25 chasse dhcpd[3430]: Wrote 0 deleted host decls to leases file.
Nov 21 11:33:25 chasse dhcpd[3430]: Wrote 0 new dynamic host decls to leases
file.
Nov 21 11:33:25 chasse dhcpd[3430]: Wrote 0 NA, 0 TA, 0 PD leases to lease file.
Nov 21 11:33:25 chasse dhcpd[3430]: Bound to *:547
Nov 21 11:33:25 chasse dhcpd[3430]: DHCP6-RELAY client-id: , interface-id: ,
remote-id:
Nov 21 11:33:25 chasse dhcpd[3430]: Server starting service.
Nov 21 11:33:41 chasse dhcpd[3430]: Solicit message from
fe80::5054:ff:fe93:ffc8 port 546, transaction ID 0xAEE52700
Nov 21 11:33:41 chasse dhcpd[3430]: DHCP6-RELAY client-id:
0:2:0:0:ab:11:45:47:cc:35:fc:a:7e:5b, interface-id: , remote-id:
Nov 21 11:33:41 chasse dhcpd[3430]: Unable to pick client address: no IPv6
pools on this shared network
Nov 21 11:33:41 chasse dhcpd[3430]: Sending Reply to fe80::5054:ff:fe93:ffc8
port 546
The only thing that the change changed was that now a warning appears
that host declarations should be global.
Greetings
Marc
--
-----------------------------------------------------------------------------
Marc Haber | "I don't trust Computers. They | Mailadresse im Header
Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402
Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421
------------------------------
Message: 6
Date: Tue, 21 Nov 2017 15:17:57 +0400
From: Brice Abba <bricea...@gmail.com>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: stateless DHCPv6 only, how to get rid of "unable to pick
client address"
Message-ID:
<CABYY8cYU6HAZjroiu0OeSRBjqy7NU7xYK+hVyxSWMoUoUxoz=g...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
-1- add a pool then to the network,
-2- Hosts with the fix address might then have two IPs from the same subnet,
if you sont want (2) you can deny from the server dhcp-sol from partucular
LLA (hots with fixed IPs)
2017-11-21 14:36 GMT+04:00 Marc Haber <mh+dhcp-us...@zugschlus.de>:
> On Tue, Nov 21, 2017 at 02:29:28PM +0400, Brice Abba wrote:
> > This can help to fix this error message:
> >
> > Nov 21 08:54:59 chasse dhcpd[763]: Unable to pick client address: no IPv6
> > pools on this shared network
>
> That's a negative, sir.
>
> Nov 21 11:33:25 chasse systemd[1]: Starting ISC DHCP Server for IPv6
> (dhcpd6.con
> f)...
> Nov 21 11:33:25 chasse dhcpd[3428]: WARNING: Host declarations are
> global. They
> are not limited to the scope you declared them in.
> Nov 21 11:33:25 chasse dhcpd[3428]: DHCP6-RELAY client-id: , interface-id:
> , rem
> ote-id:
> Nov 21 11:33:25 chasse systemd[1]: Started ISC DHCP Server for IPv6
> (dhcpd6.conf).
> Nov 21 11:33:25 chasse dhcpd[3430]: WARNING: Host declarations are
> global. They are not limited to the scope you declared them in.
> Nov 21 11:33:25 chasse dhcpd[3430]: DHCP6-RELAY client-id: , interface-id:
> , remote-id:
> Nov 21 11:33:25 chasse dhcpd[3430]: Wrote 0 deleted host decls to leases
> file.
> Nov 21 11:33:25 chasse dhcpd[3430]: Wrote 0 new dynamic host decls to
> leases file.
> Nov 21 11:33:25 chasse dhcpd[3430]: Wrote 0 NA, 0 TA, 0 PD leases to lease
> file.
> Nov 21 11:33:25 chasse dhcpd[3430]: Bound to *:547
> Nov 21 11:33:25 chasse dhcpd[3430]: DHCP6-RELAY client-id: , interface-id:
> , remote-id:
> Nov 21 11:33:25 chasse dhcpd[3430]: Server starting service.
> Nov 21 11:33:41 chasse dhcpd[3430]: Solicit message from
> fe80::5054:ff:fe93:ffc8 port 546, transaction ID 0xAEE52700
> Nov 21 11:33:41 chasse dhcpd[3430]: DHCP6-RELAY client-id:
> 0:2:0:0:ab:11:45:47:cc:35:fc:a:7e:5b, interface-id: , remote-id:
> Nov 21 11:33:41 chasse dhcpd[3430]: Unable to pick client address: no IPv6
> pools on this shared network
> Nov 21 11:33:41 chasse dhcpd[3430]: Sending Reply to
> fe80::5054:ff:fe93:ffc8 port 546
>
> The only thing that the change changed was that now a warning appears
> that host declarations should be global.
>
> Greetings
> Marc
>
> --
> ------------------------------------------------------------
> -----------------
> Marc Haber | "I don't trust Computers. They | Mailadresse im Header
> Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402
> Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421
> _______________________________________________
> dhcp-users mailing list
> dhcp-users@lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users
>
--
------------------------------
Brice ABBA
www.afrinic.net
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