There is a problem .
I've configured dhcpd to update my dns records in named.
It works normal only with "Use DNS-Suffix of connection in registration" in TCP/IP -> DNS settings.
If I don't check this it doesn't work. But it's impossible to change settings on every PC. I need DNS update work always whenever this checkbox checked.
Who can help me and say why it happens ?

[codebox]root@core:/etc# cat /etc/dhcpd.conf
ddns-updates on;
ddns-update-style interim;

key DHCP_UPDATER {
algorithm HMAC-MD5.SIG-ALG.REG.INT;
secret pRP5FapFoJ95JEL06sv4PQ==;
}
zone 10.in-addr.arpa. {
primary 127.0.0.1;
key DHCP_UPDATER;
}

zone 0.0.192.in-addr.arpa. {
primary 127.0.0.1;
key DHCP_UPDATER;
}
zone ds. {
primary 127.0.0.1;
key DHCP_UPDATER;
}
zone eth.ds. {
primary 127.0.0.1;
key DHCP_UPDATER;
}
zone wlan.ds. {
primary 127.0.0.1;
key DHCP_UPDATER;
}

######## DS Network ######
shared-network dsnet {
# ETH/WLAN
subnet 10.0.0.0 netmask 255.255.0.0 {
allow unknown-clients;
option netbios-name-servers 10.0.0.1;
option log-servers 10.0.0.1;
option time-servers 10.0.0.1;
option domain-name-servers 10.0.0.1;
option broadcast-address 255.255.255.255;
option subnet-mask 255.255.0.0;
option routers 10.0.0.1;
authoritative;
max-lease-time 14400;
default-lease-time 7200;
range 10.0.0.10 10.0.0.254;

######## Wired Clients ########
# ally.eth.ds
host ally {
hardware ethernet 00:10:4b:36:7d:2b;
fixed-address 10.0.0.10;
option domain-name "eth.ds.";
}
# slim.eth.ds
host slim {
hardware ethernet 00:18:f3:4e:e5:df;
fixed-address 10.0.0.11;
option domain-name "eth.ds";
}
### CUT ###

######## Wi-Fi Clients ########
# ludvig.wlan.ds
host ludvig_wlan {
hardware ethernet 00:04:23:69:4D:EC;
fixed-address 10.0.1.10;
option domain-name "wlan.ds";
}
# vikulich.wlan.ds
host vikulich_wlan {
hardware ethernet 00:12:f0:0d:a7:db;
fixed-address 10.0.1.11;
option domain-name "wlan.ds";
}
### CUT ###
}
}
[/codebox]