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Re: [Openvpn-users] Re: Bridging and multicast


  • Subject: Re: [Openvpn-users] Re: Bridging and multicast
  • From: Ed Thomson <ethomson@xxxxxxxxxxxx>
  • Date: Sun, 07 Aug 2005 20:14:09 -0500

More investigation shows that mt-daapd is getting multicast across the vpn, and my iTunes gets the mDNS packet, but tries to connect to the primary interface's IP address. I think this is an issue with mt-daapd advertising the primary interface's IP address to every interface, instead of advertising that particular interface's IP address.

So, I think this isn't a problem with my VPN setup.

(By the way, after fiddling for hours with the various IPsec/L2TP VPNs, I fundamentally could not make my Mac talk to my Linux box. OpenVPN worked in *ten minutes.* Thanks so much to all the developers and doc writers for making something clear and straightforward.)

-Ed

Ed Thomson wrote:
No luck. Plus it appears to to be sending multicast to en0 and en1 (ethernet and wireless). It just seems to be ignoring tap. =/

That said, it's entirely possible that there's weirdness going on in another way. The mac's doing internet connection sharing between en0 and en1, but I'm not entirely sure what that does behind the scenes. I'll ditch that setup and see what happens then.

-Ed

Patrick Cervicek wrote:

Ed Thomson wrote:

The Mac sends Rendezvous over the ethernet and wireless devices, but doesn't seem to be sending over the tap device (from tcpdump on the Mac or the Linux box.) Does this mean it's not listening for Rendezvous on the tap device?



It could be possible that your mac has already a fixed route for 224.0.0.0/8 which will bypass your tap-interface (default gateway).
Check your Mac's routes with 'netstat -rn'.
If you find a route for 224.0.0.0/8 - delete it.




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