[radvd-devel-l] Wrongly picks and advertises /80 IPs

[Reuben Hawkins]

Hi Roman,

Thanks for the bug report.  I'll look into it when I get some surplus time.

Thanks,
Reuben


On Fri, Feb 15, 2013 at 5:55 AM, Roman Mamedov <rm at romanrm.ru> wrote:

> Hello,
>
> radvd.conf:
>
> interface eth1.2 {
>     AdvSendAdvert on;
>     AdvManagedFlag on;
>     AdvLinkMTU 1492;
>     prefix ::/64 { };
>     RDNSS fd39::39 { };
>     DNSSL romanrm.ru romanrm.net romanrm.hk version6.ru { };
> };
>
> Interface:
>
> eth1.2    Link encap:Ethernet  HWaddr 00:60:6e:20:25:99
>           inet addr:192.168.2.39  Bcast:192.168.2.255  Mask:255.255.255.0
>           inet6 addr: 2a02:2698:xxxx:xxxx:fff2::39/80 Scope:Global
>           inet6 addr: fd39:0:2::39/64 Scope:Global
>           inet6 addr: fe80::260:6eff:fe20:2599/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1
>           RX packets:5577 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:4016 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:477626 (466.4 KiB)  TX bytes:434209 (424.0 KiB)
>
>
> radvdump on the client:
>
> #
> # radvd configuration generated by radvdump 1.8.5
> # based on Router Advertisement from fe80::260:6eff:fe20:2599
> # received by interface eth1
> #
>
> interface eth1
> {
>         AdvSendAdvert on;
>         # Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump
>         AdvManagedFlag on;
>         AdvOtherConfigFlag off;
>         AdvReachableTime 0;
>         AdvRetransTimer 0;
>         AdvCurHopLimit 64;
>         AdvDefaultLifetime 1800;
>         AdvHomeAgentFlag off;
>         AdvDefaultPreference medium;
>         AdvLinkMTU 1492;
>         AdvSourceLLAddress on;
>
>         prefix fd39:0:2::/64
>         {
>                 AdvValidLifetime 86400;
>                 AdvPreferredLifetime 14400;
>                 AdvOnLink on;
>                 AdvAutonomous on;
>                 AdvRouterAddr on;
>         }; # End of prefix definition
>
>
>         prefix 2a02:2698:xxxx:xxxx:fff2::/80
>         {
>                 AdvValidLifetime 86400;
>                 AdvPreferredLifetime 14400;
>                 AdvOnLink on;
>                 AdvAutonomous on;
>                 AdvRouterAddr on;
>         }; # End of prefix definition
>
>
>         RDNSS fd39::39
>         {
>                 AdvRDNSSLifetime 600;
>         }; # End of RDNSS definition
>
>
>         DNSSL romanrm.ru romanrm.net romanrm.hk version6.ru
>         {
>                 AdvDNSSLLifetime 600;
>         }; # End of DNSSL definition
>
> }; # End of interface definition
>
> -----
>
> The config clearly states "prefix ::/64".
> RADVD should not have picked the /80 IP to advertise as a /80 prefix.
> This IP should have been ignored.
> This particular IP was never intended by me for RA, and the client
> now spams the log with
>
> [338607.660000] IPv6 addrconf: prefix with wrong length 80
> [338623.680000] IPv6 addrconf: prefix with wrong length 80
> [338639.710000] IPv6 addrconf: prefix with wrong length 80
>
>
> --
> With respect,
> Roman
>
> --
> radvd-devel-l mailing list  :  radvd-devel-l at litech.org
> http://lists.litech.org/listinfo/radvd-devel-l
>
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