IPv6 and router advertisement

[Martin Kraus]

On Thu, Sep 05, 2013 at 11:00:17PM +0200, Ondrej Zajicek wrote:
> On Thu, Sep 05, 2013 at 05:34:48PM +0200, Miłosz Oller wrote:
> > 
> > Hi
> > 
> > I have a problem with RA. 
> ...
> > Problem is on router 2 and protocol dc2. When I assign the address on
> > vlan interface, eg 2001:67c:16f8:2::1/64 dev bond1.10 on router 2,
> > hosts in this vlan recive addresses with this prefix. 
> ...
> > With protocol dc1 on router 1 is everything ok. Hosts don't recive any
> > addresses.
> > Why host recive address from router? 
> 
> Hello
> 
> If i understand your problem correctly - they shouldn't get addresses
> because of 'autonomous off' option?
> 
> You could try (on a host) to remove these addresses by hand and then run
> tcpdump (like 'tcpdump -vv -s 0 -n -i ethX ip6') on a host to see which
> packet with which content caused these addresses reappear.

Hi. If I remember correctly

tcpdump -i ethX -nvv icmp6 and 'ip6[40:1] = 134'

should show the router advertisments being heard. there might be few minutes
between them so you need to wait a bit.

mk