步骤1【on DPU 改DNS】:
vim /etc/resolv.conf
内容改为:namesever:114.114.114.114
步骤2【on Host 做nat和路由转发】
sudo iptables -t nat -A POSTROUTING -s 192.168.100.0/24 -o enp0s31f6 -j MASQUERADE
echo 1 > /proc/sys/net/ipv4/ip_forward
# RSHIM网段:192.168.100.0/24(Host与Arm通信的网段),Wan口:enp0s31f6