[pkg-dhcp-devel] Bug#753692: DDNS vs FQDN generated by dhcp server

[Harald Dunkel]

Package: isc-dhcp-server
Version: 4.3.0+dfsg-1

Problem with DDNS support: If the dhcp server has
set
	ddns-updates on;
	ddns-update-style standard;	# or interim
	allow client-updates;
	do-forward-updates on;
	:
	zone example.com {
		primary localhost;
	}
	zone 0.0.10.in-addr.arpa {
		primary localhost;
	}
	subnet 10.0.0.0 netmask 255.255.255.0 {
		ddns-domainname "example.com.";
		:
		pool {
			range 10.0.0.100 10.0.0.254;
		}
	}

and if the client "foo.example.com" has

	send host-name = gethostname();

in dhclient.conf, then the server tries to register
A and PTR records for

	foo.example.com.example.com.

Doesn't sound reasonable to me.

If the client's host name is set to "foo.example.com."
(please note the dot), then the generated host name is

	foo.example.com..example.com.

Thats weird.

bind9 is version 1:9.9.5.dfsg-4


Regards
Harri