[Dnsmasq-discuss] Win10 Dhcpv6 issue?

Xander Victory xander at xandervictory.id.au
Thu Jun 30 14:24:32 BST 2016


This seems to have just been another Windows 10 Stupid (I thought I'd 
gotten away with not having any).

I followed this article and deleted both DUID keys in the registry and 
it seems to be able to maintain a lease.
https://support.microsoft.com/en-us/kb/2711727

Support page appears to apply to non-updated 7/8/Server 2008R2/Server 
2012 too.

On 25/06/2016 8:42 PM, Vladislav Grishenko wrote:
>
> My bad, it was wrong assumption, sorry.
> Just checked, dnsmasq doesn’t really support REBIND at all at the 
> moment, fix in 2.72 actually fixed nothing.
>
> Best Regards, Vladislav Grishenko
>
> *From:*Xander Victory [mailto:xander at xandervictory.id.au]
> *Sent:* Saturday, June 25, 2016 5:21 PM
> *To:* Vladislav Grishenko <themiron.ru at gmail.com>
> *Cc:* dnsmasq-discuss at lists.thekelleys.org.uk
> *Subject:* RE: [Dnsmasq-discuss] Win10 Dhcpv6 issue?
>
> No, dnsmasq was one version below current, even updating to current 
> (gentoo patches) nothing changed
>
> On Jun 25, 2016 8:19 PM, "Vladislav Grishenko" <themiron.ru at gmail.com 
> <mailto:themiron.ru at gmail.com>> wrote:
>
>     Hi, Xander
>
>     Not exactly related to Windows 10 ignorance, but according pcap,
>     dnsmasq doesn’t reply to REBIND requests.
>
>     So, you version seems older than 2.72 where it was fixed, is it?
>
>     If so, it’s desirable to update to the current latest 2.76.
>
>     Best Regards, Vladislav Grishenko
>
>     *From:*Dnsmasq-discuss
>     [mailto:dnsmasq-discuss-bounces at lists.thekelleys.org.uk
>     <mailto:dnsmasq-discuss-bounces at lists.thekelleys.org.uk>] *On
>     Behalf Of *Xander Victory
>     *Sent:* Friday, June 24, 2016 4:21 PM
>     *To:* dnsmasq-discuss at lists.thekelleys.org.uk
>     <mailto:dnsmasq-discuss at lists.thekelleys.org.uk>
>     *Subject:* [Dnsmasq-discuss] Win10 Dhcpv6 issue?
>
>     I'm having some trouble getting windows 10 to keep its v6 lease,
>     it seem to fail to renew.
>
>     From packet sniffing it seems to just be ignoring DNSMasq's
>     replies to the renew packets, and then falls back to soliciting
>     continuously, despite being replied to.
>
>     I've attached the pcap files (hopefully). Shows that it acquires
>     it on reboot, but fails after the lease time is (about to?) expire
>     - set at 2 hours because of issues with the xbox one getting a new
>     address each boot (you can see in the 2nd pcap that it renews its
>     address just fine).
>
>     Is windows 10 borked or is it something with my config? I'm unsure
>     if this is a recent development or not to be honest.
>
>     Not exactly related, but I've noticed that DNSMasq sends its v6
>     packets (router advertisements and dhcpv6) from the full link
>     local address, even though the default address is a manually
>     configured fe80::1
>
>     relevant config:
>
>     dhcp-host=id:00:01:00:01:1a:1b:af:8c:bc:5f:f4:d8:41:bc,[::3],bc:5f:f4:d8:41:bc,10.1.2.6,xander
>     dhcp-range=br0,10.1.2.100,10.1.2.249,255.255.255.0,12h
>     dhcp-range=br0,2001:44b8:610e:3c00::4,2001:44b8:610e:3c00::ffff,2h
>     enable-ra
>

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