Wrong prefix length is advertised

[Juergen Bachsteffel]

Hello!

I am running ISC dhcpd Version 4.2.6-7.3 on SLES 12.


I have a very simply IPv6-Config. All other values
are default. I have changed nothing.


....

subnet6 fda0:65da:e55a:1::/64 {
	range6 fda0:65da:e55a:1::0010 fda0:65da:e55a:1::0100;
}


My problem is. The clients (Windows 7 and Linux) get a IPv6-Address, but
when I ping between them, nothing happens.

Reason:

If if type 'ip -6 addr' on Linux, I can see that the prefix length is
/128. Same effect on Windows.

e.g fda0:65da:e55a:1::20/128



Has anyone seen such an effect? Maybe I am doing something wrong.



By the way. If I advertise the same prefix with 'radvd' everything works
as expected. :-)

Any hint may help!


Thank you.


Greetings,
   Juergen