[Openswan Users] L2TPD with multicast

andy huang ah6511 at yahoo.com
Tue Nov 20 13:08:42 EST 2007


I have installed OpenSWAN as well as L2TPD on Ubuntu
7.10. Here is the configuration I have:
   NAT( Network
(L2TPD/---------NAT( XP

So the Ubuntu has following eth interface:
eth0:, eth1:
Windows XP client PC was able to connect to it and
ppp0 is 
But the multicast client on the Windows XP can't join
the group on the Corp network thru L2TP tunnel. 
I have enabled IP Forwarding: echo 1 >
/proc/sys/net/ipv4/ip_forward and TTL is big enough.
Ethereal shows that IGMP message was sent to ppp0, but
not eth0. 
Here is some info:

How can I enable multicast forwarding/routing thru
L2TP tunnel? TIA. 

More information about the Users mailing list