URL: https://linuxfr.org/forums/linux-general/posts/configuration-dhcp-643cd7f3-9eaa-4101-a246-69e75a7d6fda Title: Configuration dhcp Authors: Philippe M Date: 2016年05月24日T11:46:46+02:00 License: CC By-SA Tags: Score: 0 Bonjour à tous, Je tourne autour d'un problème depuis pas mal de temps et je n'arrive pas à en trouver la cause, ni même savoir la source. J'utilise dhcpd pour fournir les paramètres réseaux à toute mes machines (pc, portables, terminaux...). Tout est ok pour 98% du parc et les 2% restant sont particuliers. Se sont des portables qui sont amenés à ce connecter en Wifi ou en filaire suivant le besoin. Dans la config de dhcp j'utilise des baux pour réserver les adresses de toutes mes machines et pour ces machines il y a un bail par interfaces, par exemple : ``` host pccom12w { hardware ethernet 9c:4e:36:7c:33:88; fixed-address 192.168.X.XXX; option dhcp-client-identifier "pccom12"; option host-name "pccom12"; } host pccom12 { hardware ethernet 2c:d4:44:b5:9f:65; fixed-address 192.168.X.XXX; option dhcp-client-identifier "pccom12"; option host-name "pccom12"; } ``` pccom12w correspond à l'interface wifi et l'autre ethernet. Au niveau des portables (Windows 7 64bits) j'ai configuré interfaces par interfaces pour que les emplacements réseaux soient reconnu correctement (ils sont en "Réseau de bureau"). Sur ces machines le fabriquant (Fujistu) a eu la bonne idée d'ajouter un utilitaire (Plugfree Network) qui permet de couper la carte wifi automatiquement lorsqu'un câble est branché sur la carte réseau. Tout est ok... Mais... Il en faut bien un... Ca merdois. Contexte : J'allume mon pc et je me connecte en wifi. Je boss quelques instant, je surf, tout va bien. J'ai besoin d'avoir plus de bande passante je veux basculer donc je bascule sur le filaire. Je branche le câble, ça prend 2 secondes pour que Plugfree Network désactive la carte wifi et laisse la priorité à la carte filaire. Dans les log dhcp je vois bien passé les requêtes dhcp pour l'interface ethernet mais il boucle. Première requête avec seulement le Wifi ```sh May 24 11:36:50 yyyyy dhcpd: Remove host declaration pccom12w or remove 192.168.X.XXX May 24 11:36:50 yyyyy dhcpd: from the dynamic address pool for 192.168.X/24 May 24 11:36:50 yyyyy dhcpd: DHCPREQUEST for 192.168.X.XXX from 9c:4e:36:7c:33:88 via eth0 May 24 11:36:50 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 9c:4e:36:7c:33:88 via eth0 May 24 11:36:54 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:36:54 yyyyy dhcpd: Remove host declaration pccom12w or remove 192.168.x.xxx May 24 11:36:54 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:36:54 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx from 9c:4e:36:7c:33:88 via eth0 May 24 11:36:54 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 9c:4e:36:7c:33:88 via eth0 May 24 11:36:58 yyyyy dhcpd: DHCPINFORM from 192.168.x.xxx via eth0 May 24 11:36:58 yyyyy dhcpd: DHCPACK to 192.168.x.xxx (9c:4e:36:7c:33:88) via eth0 ``` Là tout est ok ça marche, maintenance je branche le câble le ping-pong commence ``` May 24 11:39:03 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:03 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:03 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:03 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:03 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:09 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:09 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:09 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:09 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:09 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:09 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:09 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:10 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:10 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:10 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:10 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:10 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:10 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:10 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:11 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:11 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:11 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:11 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:11 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:11 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:11 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:12 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:12 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:12 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:12 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:12 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:12 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:12 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:13 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:13 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:13 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:13 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:13 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:13 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:13 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:14 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:14 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:14 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:14 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:14 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:14 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:14 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:15 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:15 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:15 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:15 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:15 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:15 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:15 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:16 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:16 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:16 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:16 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:16 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:16 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:16 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:17 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:17 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:17 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:17 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:17 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:17 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:17 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:18 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:18 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:18 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:18 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:18 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:18 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:18 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:19 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:19 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:19 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:19 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:19 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:19 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:19 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:20 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:20 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:20 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:20 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:20 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:20 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:20 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:21 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:21 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:21 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:21 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:21 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:21 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:21 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:22 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:22 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:22 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:22 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:22 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:22 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:22 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:24 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:24 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:24 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:24 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:24 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:24 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:24 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:25 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:25 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:25 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:25 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:25 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:25 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:25 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:26 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:26 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:26 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:26 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:26 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:26 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:26 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:27 yyyyy dhcpd: DHCPDISCOVER from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:27 yyyyy dhcpd: DHCPOFFER on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:27 yyyyy dhcpd: Dynamic and static leases present for 192.168.x.xxx. May 24 11:39:27 yyyyy dhcpd: Remove host declaration pccom12 or remove 192.168.x.xxx May 24 11:39:27 yyyyy dhcpd: from the dynamic address pool for 192.168.x/24 May 24 11:39:27 yyyyy dhcpd: DHCPREQUEST for 192.168.x.xxx (192.168.x.zzz) from 2c:d4:44:b5:9f:65 via eth0 May 24 11:39:27 yyyyy dhcpd: DHCPACK on 192.168.x.xxx to 2c:d4:44:b5:9f:65 via eth0 ``` Côté Windows il n'arrive pas a identifier le réseau alors que lors de la première configuration j'ai tout paramétré. En fouillant sur le net il est question du service Bonjour de Windows que j'ai désactivé, d'adobe CS3 que je n'ai pas. J'ai tenté en fusionnant les emplacements réseaux mais rien n'y fait. C'est bien pour cette raison que j'en viens à me dire que c'est peut être côté serveur que j'ai un soucis.

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