[SOLVED] Network problem upgrade 6 to 7

[aliistif]

Hi
we upgraded the pprsrv from 6.4.15 to 7.
everything is ok.but we have encounteresid network problem when we restart the prxsrv.
we lost the management ip of PRXSRV.
when we checked etc/interfaces we saw the ip.but we cannot ping to ip and we cannot open the management Page.

 

[leesteken]

Have you checked the network devices name (ip a versus /etc/network/interfaces) by way of login to the Proxmox host console using a physical display and keyboard? This is a known issue when upgrading from 6.x to 7.y.
Please remove the other two duplicate posts here and here.