相同的DHCP租约，过多的dhcp流量

Question

新安装CentOS 7，删除dnsmasq，安装dhcp服务器，iptables，webmin，apache。

这是一所学校，很多交换机和wifi (桥接模式)AP都连接到这个路由器

一个网络- 10.0.0.0

DHCP池- 10.5.0.1 - 10.5.244.244

有静态租约(约100份)

我收到了像http://pastebin.com/gXGtr3Y8这样的过多信息

Apr  1 08:03:30 int dhcpd: DHCPDISCOVER from a4:ee:57:e0:91:df via enp28s1
Apr  1 08:03:31 int dhcpd: DHCPOFFER on 10.5.20.90 to a4:ee:57:e0:91:df (EPSONE091DF) via enp28s1
Apr  1 08:03:32 int dhcpd: DHCPDISCOVER from a4:ee:57:e0:91:df (EPSONE091DF) via enp28s1
Apr  1 08:03:32 int dhcpd: DHCPOFFER on 10.5.20.90 to a4:ee:57:e0:91:df (EPSONE091DF) via enp28s1
Apr  1 08:03:32 int dhcpd: DHCPREQUEST for 10.5.20.90 (10.0.0.1) from a4:ee:57:e0:91:df (EPSONE091DF) via enp28s1
Apr  1 08:03:32 int dhcpd: DHCPACK on 10.5.20.90 to a4:ee:57:e0:91:df (EPSONE091DF) via enp28s1
Apr  1 08:03:34 int dhcpd: DHCPREQUEST for 10.5.20.90 (10.0.0.1) from a4:ee:57:e0:91:df (EPSONE091DF) via enp28s1

这导致了

    10.5.20.90  a4:ee:57:e0:91:df   EPSONE091DF 2016/04/01 05:03:32 2017/04/01 10:52:18
    10.5.20.90  a4:ee:57:e0:91:df   EPSONE091DF 2016/04/01 05:03:34 2017/04/01 10:52:20
    10.5.20.90  a4:ee:57:e0:91:df   EPSONE091DF 2016/04/01 05:03:36 2017/04/01 10:52:22
    10.5.20.90  a4:ee:57:e0:91:df   EPSONE091DF 2016/04/01 05:03:39 2017/04/01 10:52:25
    10.5.20.90  a4:ee:57:e0:91:df   EPSONE091DF 2016/04/01 05:03:40 2017/04/01 10:52:26

而且，大多数Android设备都很难连接到wifi。http://pastebin.com/UMsg7jS7

你能引导我朝正确的方向前进吗？如有需要，可索取更多资料:)

Answer 1

似乎存在一些旧的静态IP地址的WiFi AP，所以在使它们成为DHCP之后，问题就消失了。