lower bound of prefixlength in host subnet ?

[Flynn Marquardt]

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Analyzing a routing problem in a tinc net I found, that a declaration of
a class-A subnet (x.0.0.0/8) in a host configuration file is ignored, e.g.

Subnet = x.0.0.0/8

Looking at the subnet lists produced with kill -USR2 does not show this
subnet
in the log (but all others, that are configured in the same file).

Splitting the subnet in two /9 subnets helps:

Subnet = x.0.0.0/9
Subnet = x.128.0.0/9

Now all works fine.

All tests are done with tinc version 1.0.13.

Is there a lower bound for the prefixlength of a subnet declaration in
the host file?

If it is true, it should be mentioned in the documentation and a warning
in the
log should mention something like an "ignored subnet".

Cheers
Flynn
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