Re: Wired behaviour with IPv6 over PPP

James Chapman wrote:

Andrew Morton wrote:

quoted

On Wed, 21 May 2008 14:56:43 +0200 Matthias Cramer
[off-list ref] wrote:

quoted

I have a very wired behaviour when doing IPv6 over PPPoE.

The situation:

A linux box connected to a DSL Modem, on the other side is a Cisco
LNS which terminates the PPP session (actually L2TP).
I have control over both ends.

When I have net.ipv6.conf.all.forwarding set to 0 then the ppp
Interface gets a IPv6 address from the Cisco via IP6CP.
When I have net.ipv6.conf.all.forwarding set to 1 them the ppp
Interface does not get an address, it has only a normal link local
address.

What do you mean by normal link local address?

a fe80:: address, which every IPv6 enabled Interface has...

quoted

quoted

When I start the ppp session with forwarding set to 0 I can ping out
and there exists a default route to ppp0 , then I switch forwarding to 1
the default route disappears and therefore routing does not work any
longer.

Did this work with previous kernel versions?

No, in my opinion it never worked. But I thought that pppd does it wrong
because id never got an IPv6 address. But I had always forwarding
enabled. Now in this case i started pppd without forwarding enabled and
got an address.

Does pppd log any errors?

No, no errors

-- 
Matthias Cramer                System & Network Manager
Interway Communication GmbH    Phone +41 43 500 1111
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