Re: [Dnsmasq-discuss] "no available addresses" with DHCPv6 stateful config
Thanks a lot Simon, it does seem to be a WIDE issue - the DHCPv6 transaction works perfectly fine with the ISC client. I wasn't using WIDE for any particular reason over ISC, just an old habit/name recognition from years past, so I'm happy to move to what works best! Thanks, Joshua M. Boniface On 2018-11-20 04:00 PM, Simon Kelley wrote: > This does seem odd. Would it be possible to capture the DHCP packets, > using wireshark or tcpdump? Send the dump directly to me if you don't > want to post it in public. > > I'm not sure what the status of the WIDE client is - it's not common. > Maybe worth trying the ISC client instead, for quick fix. I can't see an > obvious problem with your config. > > > > Cheers, > > Simon. > >> >> sudo /usr/sbin/dnsmasq \ >> --bogus-priv \ >> --no-hosts \ >> --dhcp-authoritative \ >> --filterwin2k \ >> --expand-hosts \ >> --domain=test \ >> --local=/test/ \ >> --log-facility=- \ >> --log-dhcp \ >> --keep-in-foreground \ >> --bind-interfaces \ >> --interface=br1002 \ >> --except-interface=lo \ >> --listen-address=2001::::1 \ >> --dhcp-range=::2,::,constructor:br1002,24h >> >> That `listen-address` is definitely bound to the server side: >> >> 6: br1002: mtu 8800 qdisc noqueue >> state UP group default qlen 1000 >> link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff >> inet6 2001::::1/64 scope global >> valid_lft forever preferred_lft forever >> >> What's happening is my DHCPv6 requests come in fine, but the server >> reports "no available addresses" even though I have what appears to be a >> valid range of available addresses: >> >> dnsmasq-dhcp[746253]: 12629722 available DHCP range: 2001::::2 >> -- 2001:::: >> dnsmasq-dhcp[746253]: 12629722 client MAC address: 52:54:00:5c:f1:32 >> dnsmasq-dhcp[746253]: 12629722 DHCPSOLICIT(br1002) >> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 >> dnsmasq-dhcp[746253]: 12629722 DHCPADVERTISE(br1002) >> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 no addresses available >> dnsmasq-dhcp[746253]: 12629722 tags: dhcpv6, br1002 >> dnsmasq-dhcp[746253]: 12629722 sent size: 14 option: 1 client-id >> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 >> dnsmasq-dhcp[746253]: 12629722 sent size: 14 option: 2 server-id >> 00:01:00:01:23:83:8e:6b:52:54:00:14:c5:11 >> dnsmasq-dhcp[746253]: 12629722 sent size: 24 option: 13 status 2 no >> addresses available >> dnsmasq-dhcp[746253]: 626033 available DHCP range: 2001::::2 -- >> 2001:::: >> dnsmasq-dhcp[746253]: 626033 client MAC address: 52:54:00:5c:f1:32 >> dnsmasq-dhcp[746253]: 626033 DHCPREQUEST(br1002) >> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 >> dnsmasq-dhcp[746253]: 626033 DHCPREPLY(br1002) >> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 no addresses available >> dnsmasq-dhcp[746253]: 626033 tags: dhcpv6, br1002 >> dnsmasq-dhcp[746253]: 626033 sent size: 14 option: 1 client-id >> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 >> dnsmasq-dhcp[746253]: 626033 sent size: 14 option: 2 server-id >> 00:01:00:01:23:83:8e:6b:52:54:00:14:c5:11 >> dnsmasq-dhcp[746253]: 626033 sent size: 24 option: 13 status 2 no >> addresses available >> dnsmasq-dhcp[746253]: 626033 sent size: 16 option: 23 dns-server >> 2001::::1 >> >> From my understanding of the man page and the older thread "Using IPv6 >> DHCP" >> (http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2012q3/006306.html), >> this should be all I need to get a stateful DHCPv6 configuration. I've >> also tried every combination of options I can come up with in the >> `dhcp-range` config without success. Even if I set `static` mode and use >> a `dhcp-host` option for my test host, I get the exact same "no >> addresses available" message. >> >> SLAAC works fine when I add `enable-ra`, and `ra-stateless` to >> `dhcp-range`, but this configuration to hand out only IPv6 addresses >> statefully never seems to work as described in that thread. The goal is >> to have a fully stateful DHCPv6 server that IPv6-only clients can get >> addresses from and, most importantly, update dnsmasq with their hostname >> (hence why I'm not using SLAAC or `ra-stateless`). The very specific >> binding config is due to me running a separate dnsmasq instance for each >> of an arbitrary number of interfaces. >> >> Can anyone offer any advice on what I might be doing wrong here? >> >> Thanks, >> Joshua M. Boniface >> >> ___ >> Dnsmasq-discuss mailing list >> Dnsmasq-discuss@lists.thekelleys.org.uk >> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss >> > > > > ___ > Dnsmasq-discuss mailing list > Dnsmasq-discuss@lists.thekelleys.org.uk > http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss > ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk
Re: [Dnsmasq-discuss] "no available addresses" with DHCPv6 stateful config
This does seem odd. Would it be possible to capture the DHCP packets, using wireshark or tcpdump? Send the dump directly to me if you don't want to post it in public. I'm not sure what the status of the WIDE client is - it's not common. Maybe worth trying the ISC client instead, for quick fix. I can't see an obvious problem with your config. Cheers, Simon. > > sudo /usr/sbin/dnsmasq \ > --bogus-priv \ > --no-hosts \ > --dhcp-authoritative \ > --filterwin2k \ > --expand-hosts \ > --domain=test \ > --local=/test/ \ > --log-facility=- \ > --log-dhcp \ > --keep-in-foreground \ > --bind-interfaces \ > --interface=br1002 \ > --except-interface=lo \ > --listen-address=2001::::1 \ > --dhcp-range=::2,::,constructor:br1002,24h > > That `listen-address` is definitely bound to the server side: > > 6: br1002: mtu 8800 qdisc noqueue > state UP group default qlen 1000 > link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff > inet6 2001::::1/64 scope global > valid_lft forever preferred_lft forever > > What's happening is my DHCPv6 requests come in fine, but the server > reports "no available addresses" even though I have what appears to be a > valid range of available addresses: > > dnsmasq-dhcp[746253]: 12629722 available DHCP range: 2001::::2 > -- 2001:::: > dnsmasq-dhcp[746253]: 12629722 client MAC address: 52:54:00:5c:f1:32 > dnsmasq-dhcp[746253]: 12629722 DHCPSOLICIT(br1002) > 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 > dnsmasq-dhcp[746253]: 12629722 DHCPADVERTISE(br1002) > 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 no addresses available > dnsmasq-dhcp[746253]: 12629722 tags: dhcpv6, br1002 > dnsmasq-dhcp[746253]: 12629722 sent size: 14 option: 1 client-id > 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 > dnsmasq-dhcp[746253]: 12629722 sent size: 14 option: 2 server-id > 00:01:00:01:23:83:8e:6b:52:54:00:14:c5:11 > dnsmasq-dhcp[746253]: 12629722 sent size: 24 option: 13 status 2 no > addresses available > dnsmasq-dhcp[746253]: 626033 available DHCP range: 2001::::2 -- > 2001:::: > dnsmasq-dhcp[746253]: 626033 client MAC address: 52:54:00:5c:f1:32 > dnsmasq-dhcp[746253]: 626033 DHCPREQUEST(br1002) > 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 > dnsmasq-dhcp[746253]: 626033 DHCPREPLY(br1002) > 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 no addresses available > dnsmasq-dhcp[746253]: 626033 tags: dhcpv6, br1002 > dnsmasq-dhcp[746253]: 626033 sent size: 14 option: 1 client-id > 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 > dnsmasq-dhcp[746253]: 626033 sent size: 14 option: 2 server-id > 00:01:00:01:23:83:8e:6b:52:54:00:14:c5:11 > dnsmasq-dhcp[746253]: 626033 sent size: 24 option: 13 status 2 no > addresses available > dnsmasq-dhcp[746253]: 626033 sent size: 16 option: 23 dns-server > 2001::::1 > > From my understanding of the man page and the older thread "Using IPv6 > DHCP" > (http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2012q3/006306.html), > this should be all I need to get a stateful DHCPv6 configuration. I've > also tried every combination of options I can come up with in the > `dhcp-range` config without success. Even if I set `static` mode and use > a `dhcp-host` option for my test host, I get the exact same "no > addresses available" message. > > SLAAC works fine when I add `enable-ra`, and `ra-stateless` to > `dhcp-range`, but this configuration to hand out only IPv6 addresses > statefully never seems to work as described in that thread. The goal is > to have a fully stateful DHCPv6 server that IPv6-only clients can get > addresses from and, most importantly, update dnsmasq with their hostname > (hence why I'm not using SLAAC or `ra-stateless`). The very specific > binding config is due to me running a separate dnsmasq instance for each > of an arbitrary number of interfaces. > > Can anyone offer any advice on what I might be doing wrong here? > > Thanks, > Joshua M. Boniface > > ___ > Dnsmasq-discuss mailing list > Dnsmasq-discuss@lists.thekelleys.org.uk > http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss > signature.asc Description: OpenPGP digital signature ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
[Dnsmasq-discuss] "no available addresses" with DHCPv6 stateful config
Hello list! I'm running into an issue with a DHCPv6-only dnsmasq setup, on versions 2.76 and 2.79 from Debian. I'm trying to set a DHCPv6 range and use the wide-dhcpv6-client to get my clients IPv6 addresses. Note that all IPv6 addresses use a fake prefix for anonymity. I run dnsmasq with the following command (embedded in another daemon normally, but run manually here for testing): sudo /usr/sbin/dnsmasq \ --bogus-priv \ --no-hosts \ --dhcp-authoritative \ --filterwin2k \ --expand-hosts \ --domain=test \ --local=/test/ \ --log-facility=- \ --log-dhcp \ --keep-in-foreground \ --bind-interfaces \ --interface=br1002 \ --except-interface=lo \ --listen-address=2001::::1 \ --dhcp-range=::2,::,constructor:br1002,24h That `listen-address` is definitely bound to the server side: 6: br1002: mtu 8800 qdisc noqueue state UP group default qlen 1000 link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff inet6 2001::::1/64 scope global valid_lft forever preferred_lft forever What's happening is my DHCPv6 requests come in fine, but the server reports "no available addresses" even though I have what appears to be a valid range of available addresses: dnsmasq-dhcp[746253]: 12629722 available DHCP range: 2001::::2 -- 2001:::: dnsmasq-dhcp[746253]: 12629722 client MAC address: 52:54:00:5c:f1:32 dnsmasq-dhcp[746253]: 12629722 DHCPSOLICIT(br1002) 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 dnsmasq-dhcp[746253]: 12629722 DHCPADVERTISE(br1002) 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 no addresses available dnsmasq-dhcp[746253]: 12629722 tags: dhcpv6, br1002 dnsmasq-dhcp[746253]: 12629722 sent size: 14 option: 1 client-id 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 dnsmasq-dhcp[746253]: 12629722 sent size: 14 option: 2 server-id 00:01:00:01:23:83:8e:6b:52:54:00:14:c5:11 dnsmasq-dhcp[746253]: 12629722 sent size: 24 option: 13 status 2 no addresses available dnsmasq-dhcp[746253]: 626033 available DHCP range: 2001::::2 -- 2001:::: dnsmasq-dhcp[746253]: 626033 client MAC address: 52:54:00:5c:f1:32 dnsmasq-dhcp[746253]: 626033 DHCPREQUEST(br1002) 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 dnsmasq-dhcp[746253]: 626033 DHCPREPLY(br1002) 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 no addresses available dnsmasq-dhcp[746253]: 626033 tags: dhcpv6, br1002 dnsmasq-dhcp[746253]: 626033 sent size: 14 option: 1 client-id 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 dnsmasq-dhcp[746253]: 626033 sent size: 14 option: 2 server-id 00:01:00:01:23:83:8e:6b:52:54:00:14:c5:11 dnsmasq-dhcp[746253]: 626033 sent size: 24 option: 13 status 2 no addresses available dnsmasq-dhcp[746253]: 626033 sent size: 16 option: 23 dns-server 2001::::1 From my understanding of the man page and the older thread "Using IPv6 DHCP" (http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2012q3/006306.html), this should be all I need to get a stateful DHCPv6 configuration. I've also tried every combination of options I can come up with in the `dhcp-range` config without success. Even if I set `static` mode and use a `dhcp-host` option for my test host, I get the exact same "no addresses available" message. SLAAC works fine when I add `enable-ra`, and `ra-stateless` to `dhcp-range`, but this configuration to hand out only IPv6 addresses statefully never seems to work as described in that thread. The goal is to have a fully stateful DHCPv6 server that IPv6-only clients can get addresses from and, most importantly, update dnsmasq with their hostname (hence why I'm not using SLAAC or `ra-stateless`). The very specific binding config is due to me running a separate dnsmasq instance for each of an arbitrary number of interfaces. Can anyone offer any advice on what I might be doing wrong here? Thanks, Joshua M. Boniface ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
