Re: kerneld/multicast bug (tickled by gated)
Sun, 15 Jun 1997 19:32:29 +0200

Andi Kleen <> writes:
> writes:
>> It's not clear that we want to disable pppd in that way
>> for general use with gated. Perhaps, if I mentioned that
>> the specific call is related to the IP multicast additions
>> it would help. Also, when we disabled kerneld (i'm not sure of
>> the terminology here.. so please pardon my newbie language)..
>> the hangs stopped.
>> Does the linux kernel handle multicast groups being set across
>> ppp links? Thank-you for your quick response.

>could you try this patch please. It just prevents multicast addresses
>from being sent to kerneld. The general request-route mechanism is very
>flakey, so it's the best to disable it altogether. There exist userspace
>solutions (for example diald) that work better. Anyways, this patch
>should help.

Let me back this up. Don't worry about the request-route mechanism
being disabled. In fact, it has been removed from the current
development kernels, and those of us maintaining the networking code
for Linux generally agree that it was a mistake. There is no
problem using ppp without this mechanism, and if users want dial
on demand there are at least two better alternatives: diald, and
the latest release of pppd-2.3. Which you prefer depends on how
much configurability you need, and whether you need to support
dynamic IP addresses.

Eric Schenk                               www:
Dept. of Comp. Sci., Lund University          email:
Box 118, S-221 00 LUND, Sweden   fax: +46-46 13 10 21  ph: +46-46 222 96 38