So how do I set up the ptp instead of topology mode? Is that ethernet bridging, which was the only option I saw? Or do I even want to change from topology? -----Original Message----- From: Jan Just Keijser [mailto:jan.just.keijser@xxxxxxxxx] Sent: Wednesday, January 12, 2011 07:47 PM To: 'James Carlson' Cc: tony.chamberlain@xxxxxxxxx, linux-ppp@xxxxxxxxxxxxxxx Subject: Re: ppp / open vpn James Carlson wrote: > On 01/12/11 16:17, Jan Just Keijser wrote: > >> James Carlson wrote: >> >>> The whole point of a point-to-point interface (of any type; PPP, tunnel, >>> or otherwise) is that it connects two distinct IP nodes. Distinct. Not >>> one IP node to itself! >>> >>> >>> >> This is another trick of OpenVPN to assign "linear addresses" to clients >> while using a PtP (tun) interface. It is enabled in OpenVPN 2.1 (and >> openvpnas, which is based on 2.1) by using the >> topology subnet >> directive. >> > > That's simply frightening. Thanks for the update; I had no idea anyone > was relying on that sort of undocumented OS feature. > > Good luck getting a routing protocol to work reliably with that ... > > actually, this mode is not used in combination with routing protocols. 'topology subnet' is used primarily when multiple clients are connecting to a single server. OpenVPN also support a "point-to-point" mode (for lack of a better term), which does follow the regular PtP semantics. Running a routing protocol in that mode is just as easy as running one over a ppp-based link. HTH, JJK -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
