好开源，值得被发现。

Embeddable managed-lease DHCP client for Go: DHCPv4 and DHCPv6 with renewal, conflict detection, durable lease journal, standard library only, no root, no external dhclient. It reports leases and events but never configures the link.

Pi-hole 是一款网络级 DNS sinkhole，无需在客户端安装软件，即可为网络上的所有设备拦截广告和不需要的内容。