dhcpd.conf for dynamic dns
Chow Chi Ho (FP&HO)
chchow at cabletv.com.hk
Tue Mar 20 03:27:41 UTC 2007
Here is my dhcpd.conf
Pls help
ddns-update-style interim;
ddns-updates on;
zone example.com. { primary 192.168.128.40; }
zone 174.10.in-addr.arpa. { primary 192.168.128.40; }
server-identifier 192.168.128.80;
log-facility local7;
ddns-domainname "example.com";
########option for MTA#######
option space docsis-mta;
option docsis-mta.dhcp-server-1 code 1 = ip-address;
option docsis-mta.dhcp-server-2 code 2 = ip-address;
option docsis-mta.prov-server code 3 = string;
option docsis-mta-encap code 122 = encapsulate docsis-mta;
option docsis-mta.kerberos code 6 = string;
########local subnet declaration#######
subnet 61.10.0.128 netmask 255.255.255.192 {
option routers 61.10.0.129;
option subnet-mask 255.255.255.192;
}
subnet 192.168.128.0 netmask 255.255.255.0 {
option routers 192.168.128.254;
option subnet-mask 255.255.255.0;
}
########group declaration ########
group {
next-server 192.168.255.183;
filename "test2.cfg";
option dhcp.bootfile-name "test1.cfg";
host 00e0.6f39.f988 {hardware ethernet 00:e0:6f:39:f9:88;}
}
group {
next-server 192.168.255.183;
filename "mta_ss1.bin";
option time-servers 192.168.255.185;
option log-servers 192.168.255.192;
option domain-name-servers 192.168.128.40,192.168.128.10;
option domain-name "example.com";
ddns-domainname "example.com";
option host-name = concat (suffix (concat ("0", binary-to-ascii (16, 8, "", substring (hardware, 1, 1))),2),
suffix (concat ("0", binary-to-ascii (16, 8, "", substring (hardware, 2, 1))),2),
suffix (concat ("0", binary-to-ascii (16, 8, "", substring (hardware, 3, 1))),2),
suffix (concat ("0", binary-to-ascii (16, 8, "", substring (hardware, 4, 1))),2),
suffix (concat ("0", binary-to-ascii (16, 8, "", substring (hardware, 5, 1))),2),
suffix (concat ("0", binary-to-ascii (16, 8, "", substring (hardware, 6, 1))),2) );
option docsis-mta.prov-server 00:06:77:74:74:73:73:31:04:76:6f:69:70:07:68:6b:63:61:62:6c:65:03:63:6f:6d:02:68:6b:00
;
option docsis-mta.kerberos 05:42:41:53:49:43:01:31:00;
host 00e0.6f58.4da4 {hardware ethernet 00:e0:6f:58:4d:a4;}
}
########class declaration########
class "cm" {
match if substring(option vendor-class-identifier,0,6) = "docsis";
spawn with option agent.remote-id;
default-lease-time 604800;
max-lease-time 604800;
min-lease-time 302400;
option time-offset -10800;
next-server 192.168.255.183;
option tftp-server-name "192.168.255.183";
option time-servers 61.10.1.185;
option log-servers 192.168.255.192;
option domain-name "example.com";
option docsis-mta.dhcp-server-1 192.168.128.80;
option docsis-mta.dhcp-server-2 192.168.128.80;
}
subclass "cm" 00:e0:6f:39:f9:88;
class "emta" {
match if substring(option vendor-class-identifier,0,8)="pktc1.0:";
vendor-option-space docsis-mta;
}
subclass "emta" 00:e0:6f:58:4d:a4;
shared-network ABCD {
option domain-name "example.com";
option domain-name-servers dns.example.com;
option routers 10.174.0.1;
subnet 10.0.0.0 netmask 255.0.0.0 {
pool {
option routers 10.174.0.1;
option subnet-mask 255.255.248.0;
option domain-name-servers dns.example.com;
range 10.174.3.3 10.174.3.254;
allow members of "cm";
}
pool { # this ip range will be updated to dns.........but not work
option routers 10.174.8.1;
ddns-domainname "example.com";
option fqdn.server-update on;
option subnet-mask 255.255.252.0;
option domain-name "example.com";
option domain-name-servers dns.example.com;
range 10.174.10.1 10.174.10.10;
allow members of "emta";
ddns-updates on;
}
}
} # end shared-network
-----Original Message-----
From: S Kalyanasundaram [mailto:skalyanasundaram at novell.com]
Sent: Tuesday, March 20, 2007 11:11 AM
To: Chow Chi Ho (FP&HO); dhcp-users at isc.org
Subject: RE: dhcpd.conf for dynamic dns
I guess you are expecting the update for some static lease (host declaration). Static lease wont be updated until "update-static-lease" flag is true. Otherwise you might have forgot to add ddns-domainname option in your conf file. It would be better if you post your dhcpd.conf file.
-"kalyan"
>>> On 3/20/2007 at 8:29 AM, in message
<78CDD5837BDAAB44B33AF00D7DFE353F96B515 at MAILSVR.catvmail.local>, "Chow Chi Ho
(FP&HO)" <chchow at cabletv.com.hk> wrote:
> I am using the below example but it does not work.
> And there is no traffic from dhcp server to dns server (192.168.128.40) via
> tcpdump.
>
> any idea ?
>
> -----Original Message-----
> From: S Kalyanasundaram [mailto:skalyanasundaram at novell.com]
> Sent: Monday, March 19, 2007 6:59 PM
> To: Chow Chi Ho (FP&HO); dhcp-users at isc.org
> Subject: RE: dhcpd.conf for dynamic dns
>
>
> So you are ready to update dns with out keys. If you are not worried about
> security then yes. You can use it. But make sure in named.conf file in the
> example.com zone you have the statement. "allow-update {any;};"
>
> -"kalyan"
>
>>>> "Chow Chi Ho (FP&HO)" <chchow at cabletv.com.hk> 03/19/07 3:23 PM >>>
> Can I use
>
> ddns-update-style interim;
> zone example.com. {
> primary 192.168.128.40;
> }
> zone .10174.10.in-addr.arpa. {
> primary 192.168.128.40;
> }
>
>
> instead of using KEY ?
>
> -----Original Message-----
> From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org]On Behalf Of
> jgomez at infoweapons.com
> Sent: Monday, March 19, 2007 5:39 PM
> To: dhcp-users at isc.org
> Subject: Re: dhcpd.conf for dynamic dns
>
>
>> Hi all,
>>
>> How can I config dhcpd.conf to enable dynamic dns server update ?
>
> In dhcpd.conf, add the following:
>
> ddns-update-style interim;
>
> key update.1.168.192.in-addr.arpa.
> {
> algorithm hmac-md5;
> secret "TG6KQ9zBEzvGcsWKRO96zA==";
> }
>
> zone 1.168.192.in-addr.arpa
> {
> key update.1.168.192.in-addr.arpa.;
> }
>
>
> Please see attached document for more information...
>
> Cheers;
>
> Jonna
>
>
>
>
> --------
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