[Dnsmasq-discuss] Reverse IPv6 domain issue

[Simon Kelley]

Tracing back through git, that seems to have been broken from birth.

Patch applied. Many thanks.

Simon.



On 09/06/18 00:47, Paul Maddock wrote:
> Hi,
> 
> I think I've come across a bug with how the domain is determined for reverse 
> lookups for IPv6 addresses. Having set a domain config with my domain name and 
> IPv6 prefix I was correctly seeing the domain passed to the clients via DHCPv6, 
> but DNS lookups on the IPv6 returned my fallback domain.
> 
> Having checked the source code I think the problem is in the read_leases 
> function. For IPv6 is appears to be trying to find the domain based on the 
> hwaddr instead of the IPv6 address. I've recompiled with the below patch and 
> I'm now getting the expected domain.
> 
> Please review and apply the fix as necessary.
> 
> 
> --- dnsmasq/src/lease.c 2018-06-08 22:32:29.486011028 +0000
> +++ dnsmasq/src/lease.c 2018-06-08 22:33:31.118012520 +0000
> @@ -87,7 +87,7 @@
>             if ((lease = lease6_allocate(&addr.addr.addr6, lease_type)))
>               {
>                 lease_set_iaid(lease, strtoul(s, NULL, 10));
> -               domain = get_domain6((struct in6_addr *)lease->hwaddr);
> +               domain = get_domain6(&lease->addr6);
>               }
>           }
>  #endif
> 
> 
> Regards,
> 
> Paul
> 
> 
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