[Bug]:dhcp change to static ip ,dns lost

[wangjianxin-canaan]

What happened

dhcp change to static ip, dns lost.

Reproduction steps

1. 启动后，修改/etc/network/interfaces为如下内容

auto lo iface lo inet loopback

eth0 static ipv4 config example

auto eth0 iface eth0 inet static address 10.99.229.210 netmask 255.255.255.0 gateway 10.99.229.254

2. 修改/etc/resolv.conf为如下内容

nameserver 10.253.0.1

3. sync 然后reboot 4启动后查看ip和/etc/resolv.conf 静态IP设置生效，但是/etc/resolv.conf文件内容丢失，变成空文件

Hardware board

k510 crb kit

Software version

No response

Bug frequency

1/1

Anything else

No response

[chenhb3]

问题已修复，由于长时间未反馈结果，因此，问题先关闭；后续若有问题，请再创建，谢谢！