Re: Howto enable multicast forwarding on Linux

> While helping someone with an arp question I ran into this:
> net.ipv4.conf.all.mc_forwarding = 0
> which I obtained from
> /sbin/sysctl -a
>
> Your output would be diffenent from mine with the kernel config
> changes, but I was wondering if you need to explicitly set
> net.ipv4.conf.all.mc_forwarding = 1
> or at least check that it is enabled on relevant interfaces.
>

I thought the same thing, so I tried to enable it. However, it returns
an error when trying to set it, and other postings on google say that
error means it is a 'read-only' sysctl variable.

However, once I started pimd, I noticed that it is set to '1'
automatically whenever pimd is running. So presumably pimd has the
authority to change that sysctl variable.

Thanks for the tip however.

Regards,

Warren