Re: Abnormal behaviour of ping6

[Marc Blanchet <Marc.Blanchet@viagenie.qc.ca>]

- your "netmask" is /80. illegal in ipv6. should be /64.
- the kernel probably sets it to /64 anyway. if you then look at your 
config and substitute /80 by /64, then all your hosts appear to be on the 
same link, where they aren't.

- use /64 and do addressing for the 2 links. example:

> host1 eth0  =   fec0::1:e2d2:50:fcb2:7251 / 64
> router eth0  =   fec0::1:e2d2:50:fcb1:de7b / 64
> router eth1  =   fec0::2:a4b4:11:111b:9dd3 / 64
> host2 eth0   =  fec0::2:a4b4:50:fcb2:4574 / 64

- fec0, site-local, is currently being deprecated. You can still use it for 
testing purposes, but don't plan to do a whole ipv6 addressing plan with 
this.

Marc.

--On Mardi 19 octobre 2004 18:28 +0530 Sharmila <shard@intoto.com> wrote:

> Hi all,
> 		I am a new user of Ipv6 and I am using the following simple setup:
> Host1------Router--------Host2
> Host1,Host2 & router are linux(kernel version 2.4.18-4 ) pcs with ipv6
> insmoded .(Dual Stack is present  on all 3 m/cs).On router,I have enabled
> forwarding.
>
> The ipv6 addresses are as follows:
>
> host1 eth0  =   fec0::e2d2:50:fcb2:7251 / 80
> router eth0  =   fec0::e2d2:50:fcb1:de7b / 80
> router eth1  =   fec0::a4b4:11:111b:9dd3 / 80
> host2 eth0   =  fec0::a4b4:50:fcb2:4574 / 80
>
> Added corresponding routes on host1 and host2
>
> Now the problem is , ping6 from host1 to host2 is successful sometimes
> and failure sometimes.In case of failure,it gives "Destination not
> reachable:Address unreachable" message.
>
> Why is it behaving abnormally?? Am I missing some configuration ? Or is
> the problem with my m/cs?
> Also, are there are any better test tools?? Please help me in this regard.
>
> Thanks in advance,
> Sharmila
>
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