Hi, very surprise your mail. Now, I have check in 2.4.2 kernel. I found
multicast loopback in ip_output.c in line "Multicasts are looped back for other
local users". I have mark out this case and test it. It can pass mutlicast.
It's not right correction for this multicast loop back. I will recorrect this
From: rusty@xxxxxxxxxxxxxxxx [mailto:rusty@xxxxxxxxxxxxxxxx]
Sent: Sunday, March 01, 2544 1:54 PM
Subject: Re: Error with mrouted 3.9b3+ios12
In message <000101c09d7e$9e06f4b0$e7d0b7ca@pegasus> you write:
> Feb 23 09:58:14 ns kernel: ip_dev_loopback_xmit: bad owned skb = cfc80f00: PR
E_ROUTING FORWARD POST_ROUTING
> Feb 23 09:58:14 ns kernel: skb: pf=2 (unowned) dev=eth1 len=1500
> Feb 23 09:58:14 ns kernel: PROTO=17 126.96.36.199:1449 188.8.131.52:26911 L=15
00 S=0x00 I=54455 F=0x2000 T=4
Hmm, this means that a packet went through PRE_ROUTING, FORWARD and
POST_ROUTING, then hit loopback.
It's kinda wierd behaviour: multicast packets will pass through
PRE_ROUTING, FORWARD, POST_ROUTING (ip_mc_output), then net_rx,
net_rx_action, ip_rcv, then ???.
I'm surprised you don't get more messages, but they're fairly
Premature optmztion is rt of all evl. --DK