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Using a private IP space on the network will introduce new issues on
routing when connecting the network to the Internet using multiple
ISP connections. Some nodes have an external default gateway that is
injected into OSPF. These routes are propagated through the network
so that each node has one or more routes to the Internet. Currently
there is no smart algorithm to decide which one to use (or to use a
particular route to the Internet for a particular user). Several
options are being investigated: tunnels (e.g. PPTP), source routing and the
use of proxy servers.
Also, discussions with RIPE are planned to address the possibility of
obtaining a block of IPv4 numbers together with an AS number. This
will ease some of the ISP connection problems.
Rudi van Drunen