arch安装pdnsd作为dns缓存服务器(本地)

找到pdnsd了。在/etc/pdnsd.conf的server段，这样写：

server {
        label= "mydns";
        ip = 208.67.220.220, 8.8.8.8;  # Put your ISP's DNS-server address(es) here.
        timeout=4;         # Server timeout; this may be much shorter
        interval=30m;      # Check every 30 minutes.
        purge_cache=off;   # Keep stale cache entries in case the ISP's
}

然后再在global段，改写下面的选项

    min_ttl=96h;
    max_ttl=1w;

这样就可以咯，缓存的dns记录最少会保留96个小时，强哦。