由于您似乎使用resolvconf,因此您需要在网络接口文件中使用dns-search选项
#/etc/network/interfaces # The primary network interface auto eth0 iface eth0 inet static address 10.2.37.4 netmask 255.255.254.0 gateway 10.2.37.1 dns-nameservers 10.2.51.4 10.2.52.4 dns-search example.org