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As CIPE is an IP routing application, this manual talks only about IP-based networks. Even more precisely, this all is only about IPv4.
From Linux 2.2 on, this has been merged
ipip module, but the functionality is the same.
GSSAPI/Kerberos authentication is not supported because (a) I don't have the environment to test it, and (b) it can specify that UDP packets be encrypted with its own method, which is unnecessary and causes only additional load here, and (c) it makes the implementation much more complicated.
127.0.0.1:9, the discard UDP port
on the local host
Note the similarity to the
It is also possible, but
less convenient, to configure this statically: The carrier address of
the `2' end should be the special dummy
127.0.0.1:9, and the
ip-up script in `2' should have the
ping statement as
in the sample. See also `1-3'.
Static configuration like `1-2' is also possible.
Dynamic DNS is easiest to handle because it does not need any external scripts or special software for CIPE, only the dynamic DNS client. There are some services which provide dynamic DNS free of charge.