OpenBMC未插入网线的状态下启动BMC后，使用ipmitool lan set 1 macaddr AA:AA:AD:05:21:41修改mac地址，会导致BMC的/etc/systemd/network/ 00-bmc-eth0.network文件的默认IP丢失，触发BMC的网络无法连接

[Mr-liu2024]

OpenBMC未插入网线的状态下启动BMC后，使用ipmitool lan set 1 macaddr AA:AA:AD:05:21:41修改mac地址，会导致BMC的/etc/systemd/network/ 00-bmc-eth0.network文件的默认IP丢失，触发BMC的网络无法连接

操作步骤：
1.BMC在上电之前，拔掉BMC的网线；
2.BMC进行上电开机
3.使用ipmitool lan set 1 macaddr AA:AA:AD:05:21:41修改BMC的MAC地址
4.查看/etc/systemd/network/ 00-bmc-eth0.network文件，发现配置文件的IP丢失；
5.插入网线，ping BMC的网络，出现无法ping通

[Mr-liu2024]

When OpenBMC is started without a network cable plugged in, modifying the MAC address using ipmitool lan set 1 macaddr AA:AA:AD:05:21:41 will cause the default IP in the /etc/systemd/network/00-bmc-eth0.network file of BMC to be lost, triggering a network connection failure of BMC
Operation steps:

1. Before powering on the BMC, unplug the network cable from the BMC;
2. Power on the BMC for startup
3. Modify the MAC address of the BMC using ipmitool lan set 1 macaddr AA:AA:AD:05:21:41
4. Upon checking the file 00-bmc-eth0.network located in /etc/systemd/network/, it was discovered that the IP address in the configuration file was missing;
5. Plug in the network cable and ping the BMC network. It appears that the ping is not successful