Yes I am using Quagga as the routing engine. You can't actually configure the links ip address and netmask in ospfd it is done in zebra. When not using the netmask option with pppd and trying to rely on zebra to set it up it still gets set to 255.255.255.255. This results in the error "interface ppp1:192.168.4.2: ospf_read network address is not same [192.168.4.1]" When I comment out the lines in sys-linux.c is does in-fact work just like I would expect it to. I can set the netmask option in my peer config and it is appropriately set on the interface in the kernel. OSPF can now come up and ppp0 acts as if it were on a /30 network. My thought was that I am not expecting the ppp link to do the routing for me, but I should still tell it how large of a network it is connecting to. This should be the behavior of any ip link whether it be ethernet or ppp. -Nick -----Original Message----- From: James Carlson [mailto:carlsonj@xxxxxxxxxxxxxxx] Sent: Wednesday, July 09, 2008 1:59 PM To: Nicholas Hickman Cc: linux-ppp@xxxxxxxxxxxxxxx Subject: RE: net_mask 255.255.255.255 Nicholas Hickman writes: > Thanks for the response. I completely understand. > > I guess my real gripe is witch Cisco and their OSPF hello packets on > PPP links. You cannot configure a dialer interface for a /32 subnet. > The result is that their OSPF hello packets contain a subnet greater > than > /32 which doesn't match my ppp interface so OSPF doesn't come up > unless I change the subnet on the ppp0 interface to match what I am > connected to. What are you running on your side of the link? If it's Quagga, I think you should be able to specify a netmask through the configuration file that matches what Cisco is expecting. (I agree that their behavior here seems weird.) > Commenting out those lines and allowing a different subnet just makes > it easier to operate in the Cisco world. One of the underlying questions is whether it works right when you do that. I think at one point it did not ... and that the kernel was supposed to ignore oddities like that. Your other option would be to write an /etc/ppp/ip-up script that uses ifconfig to tweak the interface as desired. That's a little hackish, but requires no code changes. -- James Carlson 42.703N 71.076W <carlsonj@xxxxxxxxxxxxxxx> -- 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
