Subject: Re: netstat -g
To: Chris Jones <firstname.lastname@example.org>
From: Chris G Demetriou <Chris_G_Demetriou@BALVENIE.PDL.CS.CMU.EDU>
Date: 07/13/1995 09:00:30
> netstat -g gives the following error on my system (Mac IIcx):
> Multicast Forwarding Cache
> Hash Origin Mcastgroup Traffic In-Vif Out-Vifs/Forw-ttl
> netstat: kvm_read kvm_read: Bad address
> 0 0.0.0.0 0.0.0.0 0 0
> The following are all built from July 10 sources: kernel, includes,
> libc, libkvm, and netstat.
> What's wrong here?
Uh, do you have 'options MROUTING' compiled into your kernel? Not
having seriously used the mcast code, i'm not 100% sure, but reading
the netstat man page, i see:
-g Show information related to multicast (group address) routing. By
default, show the IP Multicast virtual-interface and routing ta-
bles. If the -s option is also present, show multicast routing
if there's no multicast routing code around, i'd assume it wouldn't
work. (i think it should give a better error message than that,
if you _do_ have multicast code compiled into your kernel, well, then
it's obviously a different problem. probably, the queue structures
aren't being manipulated properly, or something...