Hi, I have two internal routers with a serial interface connected to a "public" network (indeed it is the Internet but ISP allows communication only between two routers). As a backup link, I have to configure a GRE/IPSEC tunnel between routers, also carrying OSPF traffic for dynamic routing between sites. Provider gave me a /30 for point-to-point link and a /29, for each site.. In all documents, I'm reading that I need to assign an IP from /29 to a loopback interface. Problem is that I'm not using loopback interfaces on my routers (I know... I know... they are useful...) and, in any case, I don't like having a public IP on my loopback. Is there some other way to proceed?
Thanks Mimmus