odhcpd 默认是用在 ipv6 的

beyes

dnsmasq 是自带 dhcp 功能的，但看到 /etc/init.d 下还有个 odhcpd ，这看起来也是个 dhcp 服务器，从官方 WIKI 了解到，默认情况下它仅用在 IPv6 ：

The `dhcp_option` entry is meant for dnsmasq, while the more elegant `dns` entries are understood by odhcpd. By default, odhcpd is only used for IPv6, but if you also use odhcpd for IPv4, you can just use `dns` entries for everything.

WIKI 地址：http://wiki.openwrt.org/doc/uci/dhcp