(usagi-users 03607) radvd and default route problem: default route not getting deleted

[Magesh mannar <mageshmannar@xxxxxxxxx>]

Hi

 

This mail is in reference to one of the postings in the usagi mailing list (http://www.linux-ipv6.org/ml/usagi-users/msg03281.html). I couldnt find any solution to the problem. Though not same, my problem is similar. Can  anyone please let me know how you solved the problem (if any kernel patch )

 

I am encountering a similar problem. That is, When i do address autoconfiguration using radvd, the default route is not getting deleted even after the Defaultlifetime expires.

 

Let me eloborate my scenario and problem  

 

I am using radvd -0.7.2 . I have a very simple scenario.

 

Router (R) ---(wireless link in adhoc mode)-----Host (H)

 

I start radvd in the router R with very simple configuration (pls see below).

 

 

Host H receives the radvd msg , does address autoconfiguration (EUI-64) and adds the router R as the default router . Everything works fine as expected till now. Now i stop radvd in router R. After the AdvValidLife time the IPv6 address is removed from the interface but the default route still remains. 

 

Can u please let me know, how u solved the problem (please let me know if you made any changes to the kernel)

 

interface eth1
{
AdvSendAdvert on;
MinRtrAdvInterval 3;
MaxRtrAdvInterval 10;
AdvDefaultLifetime 100;
AdvHomeAgentFlag off;
prefix 3ffe:0302:0011:0002::/64
{
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr off;
AdvPreferredLifetime 120;
AdvValidLifetime 300;
};

};




tcpdump log:

tcpdump  -n -vvv -s0 ip6 -i eth1
tcpdump: listening on eth1
14:15:14.280790 fe80::20d:88ff:fe91:ff83 > ff02::1:
icmp6: router advertisement(chlim=64, pref=medium,
router_ltime=100, reachable_time=0,
retrans_time=0)(prefix info: LA
valid_ltime=300,preferred_ltime=120,prefix=3ffe:302:11:2::/64)(src
lladdr: 00:0d:88:91:ff:83) (len 56, hlim 255)

1 packets received by filter
0 packets dropped by kernel

 

Any suggestions?

Can anyone please let me know, how the  problem is changed (please let me know if  any changes need to be made to the kernel)

 

Many Thanks

 

Magesh

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