2012r2 virtual iSCSI disks?

Question

Hyper-V

Server 2012r2:
In a domain.
Roles:
iSCSI target server
Virtual iscsi disks have been created/configured. connected to the system. When elevating the role, Hyper-V used LAN1 (192.168.0.252 working network) to bind to the virtual adapter.
The second network LAN2 (192.168.100.10 spare) was not used.
After the reboot, the disks fell off.
The iSCSI initiator did not see the portal (target), gave a connection error.
Disconnected disks, deleted. the portal does not see the target.
Deleted the virtual adapter. The portal saw the target.
Now at every boot the section "file services and storage" - "all servers" Event SRV12R2-N1 48 Warning Microsoft-Windows-iSCSITarget-Service Microsoft-Windows-iSCSITarget-Service/Admin 10/06/2015 10:24:46
Virtual disk 1261900916 is disabled."
attempting to create a disk with the same name gives an error
Please help.