Clients getting dynamic leases instead of fixed addresses.

Sten Carlsen stenc at s-carlsen.dk
Tue Sep 23 18:44:38 UTC 2014



On 23/09/14 15:06, Eugène Ngontang wrote:
> Hi,
> 
> My dhcod.conf file :
> 
> /*
> */
> /*# DHCP Server Configuration file.*/
> /*#   see /usr/share/doc/dhcp*/dhcpd.conf.sample  */
> /*#*/
> /*ddns-update-style interim;*/
> /*ignore client-updates;*/
> /*subnet X.X.X.0 netmask 255.255.255.0 {*/
> /*option routers                  X.X.X.1;*/
> /*option subnet-mask              255.255.255.0;*/
> /*option nis-domain               "jcd.priv";*/
> /*option domain-name              "fr.jcdecaux.org
> <http://fr.jcdecaux.org>";*/
> /*option domain-name-servers      X.X.X.11, X.X.X.10, 10.231.2.3,
> 10.232.2.3;*/
> /*range X.X.X.100 X.X.X.200;*/
> /**/
> /*default-lease-time 21600;*/
> /*max-lease-time 43200;*/
> /*}*/
> /*
> */
> /*# create as hosts as players*/
> /*
> */
> /*host CN-SHT-LX001 { hardware ethernet 00:01:80:81:d2:e1;           
Apart from the commenting out of the lines, the HW address must start
with an additional 1: when they are ethernet addresses like this:

host CN-SHT-LX001 { hardware ethernet 1:00:01:80:81:d2:e1;
fixed-address X.X.X.15; }

>  fixed-address X.X.X.15; }*/
> /*host CN-SHT-LX002 { hardware ethernet 00:01:80:81:d2:ad;              
>  fixed-address X.X.X.16; }*/
> /*host CN-SHT-LX003 { hardware ethernet 00:01:80:81:d2:da;              
>  fixed-address X.X.X.17; }*/
> /*host CN-SHT-LX004 { hardware ethernet 00:01:80:81:d2:36;              
>  fixed-address X.X.X.18; }*/
> /*host CN-SHT-LX005 { hardware ethernet 00:01:80:81:d2:de;              
>  fixed-address X.X.X.19; }*/
> /*host CN-SHT-LX006 { hardware ethernet 00:01:80:81:d2:d5;              
>  fixed-address X.X.X.20; }*/
> /*host CN-SHT-LX007 { hardware ethernet 00:01:80:81:d2:d0;              
>  fixed-address X.X.X.21; }*/
> /*host CN-SHT-LX008 { hardware ethernet 00:01:80:81:d2:5b;              
>  fixed-address X.X.X.22; }*/
> /*host CN-SHT-LX009 { hardware ethernet 00:01:80:81:d2:00;              
>  fixed-address X.X.X.23; }*/
> /*host CN-SHT-LX010 { hardware ethernet 00:01:80:81:d2:cc;              
>  fixed-address X.X.X.24; }*/
> /*host CN-SHT-LX011 { hardware ethernet 00:01:80:82:4d:66;              
>  fixed-address X.X.X.25; }*/
> /*host CN-SHT-LX012 { hardware ethernet 00:01:80:81:89:05;              
>  fixed-address X.X.X.26; }*/
> /*host CN-SHT-LX013 { hardware ethernet 00:01:80:81:d2:57;              
>  fixed-address X.X.X.27; }*/
> /*host CN-SHT-LX014 { hardware ethernet 00:01:80:81:d2:bc;              
>  fixed-address X.X.X.28; }*/
> /*host CN-SHT-LX015 { hardware ethernet 00:01:80:81:d2:a6;              
>  fixed-address X.X.X.29; }*/
> /*host CN-SHT-LX016 { hardware ethernet 00:01:80:81:d2:2e;              
>  fixed-address X.X.X.30; }*/
> /*host CN-SHT-LX017 { hardware ethernet 00:01:80:81:d2:ac;              
>  fixed-address X.X.X.31; }*/
> /*host CN-SHT-LX018 { hardware ethernet 00:01:80:81:d2:5e;              
>  fixed-address X.X.X.32; }*/
> /*host CN-SHT-LX019 { hardware ethernet 00:01:80:81:d1:fb;              
>  fixed-address X.X.X.33; }*/
> /*host CN-SHT-LX020 { hardware ethernet 00:01:80:81:d2:e2;              
>  fixed-address X.X.X.34; }*/
> /*host CN-SHT-LX021 { hardware ethernet 00:01:80:81:d2:d9;              
>  fixed-address X.X.X.35; }*/
> /*host CN-SHT-LX022 { hardware ethernet 00:01:80:81:4c:de;              
>  fixed-address X.X.X.36; }*/
> /*host CN-SHT-LX023 { hardware ethernet 00:01:80:81:d2:d4;              
>  fixed-address X.X.X.37; }*/
> /*host CN-SHT-LX024 { hardware ethernet 00:01:80:81:d2:52;              
>  fixed-address X.X.X.38; }*/
> /*host CN-SHT-LX025 { hardware ethernet 00:01:80:81:d2:b7;              
>  fixed-address X.X.X.39; }*/
> /*host CN-SHT-LX026 { hardware ethernet 00:01:80:81:d2:a7;              
>  fixed-address X.X.X.40; }*/
> /*host CN-SHT-LX027 { hardware ethernet 00:01:80:81:ac:47;              
>  fixed-address X.X.X.41; }*/
> /*host CN-SHT-LX028 { hardware ethernet 00:01:80:81:d2:58;              
>  fixed-address X.X.X.42; }*/
> /*host CN-SHT-LX029 { hardware ethernet 00:01:80:81:d2:53;              
>  fixed-address X.X.X.43; }*/
> /*host CN-SHA-LX030 { hardware ethernet 00:01:80:81:d2:ba;              
>  fixed-address X.X.X.44; }*/
> /*host CN-SHA-LX031 { hardware ethernet 00:01:80:81:d2:5a;              
>  fixed-address X.X.X.45; }*/
> /*host CN-SHA-LX032 { hardware ethernet 00:01:80:81:d2:35;              
>  fixed-address X.X.X.46; }*/
> /*host CN-SHA-LX033 { hardware ethernet 00:01:80:81:d2:db;              
>  fixed-address X.X.X.47; }*/
> /*host CN-SHA-LX034 { hardware ethernet 00:01:80:81:d2:87;              
>  fixed-address X.X.X.48; }*/
> /*host CN-SHA-LX035 { hardware ethernet 00:01:80:81:d2:0b;              
>  fixed-address X.X.X.49; }*/
> /*host CN-SHA-LX036 { hardware ethernet 00:01:80:81:d2:77;              
>  fixed-address X.X.X.50; }*/
> /*host CN-SHA-LX037 { hardware ethernet 00:01:80:81:d2:03;              
>  fixed-address X.X.X.51; }*/
> /*host CN-SHA-LX038 { hardware ethernet 00:01:80:82:4d:13;              
>  fixed-address X.X.X.52; }*/
> /*host CN-SHA-LX039 { hardware ethernet 00:01:80:82:4d:17;              
>  fixed-address X.X.X.53; }*/
> /*host CN-SHA-LX040 { hardware ethernet 00:01:80:82:4d:76;              
>  fixed-address X.X.X.54; }*/
> /*host CN-SHA-LX041 { hardware ethernet 00:01:80:82:4d:50;              
>  fixed-address X.X.X.55; }*/
> /*host CN-SHA-LX042 { hardware ethernet 00:01:80:82:4d:65;              
>  fixed-address X.X.X.56; }*/
> /*host CN-SHA-LX043 { hardware ethernet 00:01:80:82:4d:a8;              
>  fixed-address X.X.X.57; }*/
> 
> 
> Thanks.
> 
> Regards,
> Eugène NG
> 
> 2014-09-23 11:34 GMT+02:00 Sten Carlsen <stenc at s-carlsen.dk
> <mailto:stenc at s-carlsen.dk>>:
> 
>     I have this setup working, I only have to restart the server to get it
>     to use the new configuration, I have never had any of those problems you
>     describe.
> 
>     I agree it must be a configuration mistake.
> 
> 
>     On 23/09/14 10:13, Niall O'Reilly wrote:
>     > At Tue, 23 Sep 2014 09:25:04 +0200,
>     > Eugène Ngontang wrote:
>     >>
>     >> In fact in my dhcp server configuration I have a dynamic range and
>     >> fixed addresses.
>     >>
>     >> When I add a new fixed host with MAC address and the associates IP
>     >> address, and start the client, it picks an ip address from the
>     dynamic
>     >> range instead of the ip address I have fixed.
>     >>
>     >> To fixe that, I have to comment the dynamic range in the server
>     >> configuration file, suppress the lease file in the client side and
>     >> restart dhclient or reboot the client.
>     >>
>     >> Why it works like this? I thought the static leases wins dynamics
>     one.
>     >>
>     >> How to avoid my news clients picking addresses from the dynamic range
>     >> addresses?
>     >
>     >   This is most likely due to a configuration error.
>     >
>     >   If you post your dhcpd.conf file, I or someone else on the list
>     >   may be able to find what's wrong and explain.
>     >
>     >   Best regards,
>     >   Niall O'Reilly
>     > _______________________________________________
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>     > dhcp-users at lists.isc.org <mailto:dhcp-users at lists.isc.org>
>     > https://lists.isc.org/mailman/listinfo/dhcp-users
>     >
> 
>     --
>     Best regards
> 
>     Sten Carlsen
> 
>     No improvements come from shouting:
> 
>            "MALE BOVINE MANURE!!!"
>     _______________________________________________
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> 
> 
> 
> 
> -- 
> ngonta_e at epitech.net <mailto:ngonta_e at epitech.net>
> sympavali at gmail.com <mailto:sympavali at gmail.com>
> ------------------------------------------------------------
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> L'habit ne fait pas le moine, mais lorsqu'on te voit on te juge!
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> 
> 
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-- 
Best regards

Sten Carlsen

No improvements come from shouting:

       "MALE BOVINE MANURE!!!"


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