CentOS=6.5: DHCP No subnet declaration for eth0 (192.168.0.10). Ignoring requests on eth0.……

朴灿烈づ我的快乐病毒、 2021-11-17 14:10 309阅读 0赞

在配置DHCP时报错：

ul 30 22:55:06 CentOS6 dhcpd: Internet Systems Consortium DHCP Server 4.1.1-P1  
Jul 30 22:55:06 CentOS6 dhcpd: Copyright 2004-2010 Internet Systems Consortium.  
Jul 30 22:55:06 CentOS6 dhcpd: All rights reserved.  
Jul 30 22:55:06 CentOS6 dhcpd: For info, please visit https://www.isc.org/software/dhcp/  
Jul 30 22:55:06 CentOS6 dhcpd: WARNING: Host declarations are global. They are not limited to the scope you declared them in.  
Jul 30 22:55:06 CentOS6 dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file  
Jul 30 22:55:06 CentOS6 dhcpd: Wrote 0 deleted host decls to leases file.  
Jul 30 22:55:06 CentOS6 dhcpd: Wrote 0 new dynamic host decls to leases file.  
Jul 30 22:55:06 CentOS6 dhcpd: Wrote 0 leases to leases file.  
Jul 30 22:55:06 CentOS6 dhcpd:  
Jul 30 22:55:06 CentOS6 dhcpd: No subnet declaration for eth0 (192.168.0.10).  
Jul 30 22:55:06 CentOS6 dhcpd: \*\* Ignoring requests on eth0. If this is not what  
Jul 30 22:55:06 CentOS6 dhcpd: you want, please write a subnet declaration  
Jul 30 22:55:06 CentOS6 dhcpd: in your dhcpd.conf file for the network segment  
Jul 30 22:55:06 CentOS6 dhcpd: to which interface eth0 is attached. \*\*  
Jul 30 22:55:06 CentOS6 dhcpd:  
Jul 30 22:55:06 CentOS6 dhcpd:  
Jul 30 22:55:06 CentOS6 dhcpd: Not configured to listen on any interfaces!  
Jul 30 22:55:06 CentOS6 dhcpd:  
Jul 30 22:55:06 CentOS6 dhcpd: This version of ISC DHCP is based on the release available  
Jul 30 22:55:06 CentOS6 dhcpd: on ftp.isc.org. Features have been added and other changes  
Jul 30 22:55:06 CentOS6 dhcpd: have been made to the base software release in order to make  
Jul 30 22:55:06 CentOS6 dhcpd: it work better with this distribution.  
Jul 30 22:55:06 CentOS6 dhcpd:  
Jul 30 22:55:06 CentOS6 dhcpd: Please report for this software via the CentOS Bugs Database:  
Jul 30 22:55:06 CentOS6 dhcpd: http://bugs.centos.org/  
Jul 30 22:55:06 CentOS6 dhcpd:  
Jul 30 22:55:06 CentOS6 dhcpd: exiting.

### 问题描述： ###

以上报错告诉我，我的DHCP配置的思路错了，原来的配置为

ddns-update-style interim;  
ignore client-updates;  
allow booting;  
allow bootp;  
subnet 192.168.1.0 netmask 255.255.255.0 \{ \#subnet 是默认网关，netmask是子网掩码  
option routers 192.168.1.1; \#为客户端指定网关地址   
option subnet-mask 255.255.255.0; \#为客户端设定子网掩码

range dynamic-bootp 192.168.1.50 192.168.1.60;

host ns \{  
hardware ethernet 00:0C:29:93:75:A9;  
fixed-address 192.168.1.15;\}  
\}

而我本机的IP地址正是报错的192.168.0.10，说明了我的默认网关等都配置错误，应该配置为对应的0网段，而不是1网段（当时是怎么脑挫到1网段的！！！）

### **解决方案：** ###

重新配置如下：

ddns-update-style interim;
    ignore client-updates;
    allow booting;
    allow bootp;
    subnet 192.168.0.0 netmask 255.255.255.0 {
    option routers 192.168.0.1;
    option subnet-mask 255.255.255.0;
    
    range  dynamic-bootp  192.168.0.50 192.168.0.60;
    
    host ns {
    hardware ethernet  00:0C:29:93:75:A9;
    fixed-address 192.168.0.15;}
    }

再次执行/etc/init.d/dhcpd restart

## 啊啊啊啊啊啊啊，终于成功了 ##

![20190731001032477.png][]

# 老泪纵横ing！！！！ #

感觉dhcp的坑我都跳进去过了~~~！！

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODkxNzgwNw_size_16_color_FFFFFF_t_70][]

[20190731001032477.png]: /images/20211116/5684922de2f94abd82b253e38e1d708a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODkxNzgwNw_size_16_color_FFFFFF_t_70]: /images/20211116/6b999472935b485cbc8a24ed283cbca7.png