iSCSI service failed after do-release-update

The issue was caused by missing iscsi driver.

Errors

• iscsid.service

Got following error

Oct 28 16:45:03 ubuntupi iscsid[6813]: can not create NETLINK_ISCSI socket [Protocol not supported]

• iscsid.socket

     Active: failed (Result: service-start-limit-hit) since Thu 2021-10-28 16:40:07 +08; 1min 30s ago

• depmod -a

Don't have iscsi module loaded

• Error in dmesg

open-iscsi.service - Login to default iSCSI targets

    Process: 2333 ExecStart=/sbin/iscsiadm -m node --loginall=automatic (code=exited, status=21)