单网卡设置双IP（ubuntu，debian10）

修改/etc/network/interfaces

auto eth0
iface eth0 inet static
address 192.168.6.6
netmask 255.255.0.0
gateway 192.168.6.1

auto eth0:1
iface eth0:1 inet static
address 192.168.10.6
netmask 255.255.0.0

gateway 192.168.10.1

dns-nameservers 114.114.114.114

重启网络

systemctl restart networking