iPXE Boot Multiple NIC / Subnet

[bdwyzr]

I am trying to PXE boot to iPXE with two NICs on separate subnets and switches. The first NIC connects to the primary LAN and the second connects to the iSCSI network. I am able to get DHCP address for both NICs but only 1 network is accessible at a time. If I do a ifclose to net0 I can then ping and sanhook to my iSCSI target. But when I bring net0 back up I can ping the primary LAN but my access to the iSCSI network is gone.

Primary - 192.168.1.x
iSCSI - 192.168.2.x

I wasn't able to find an answer to this question using the search, if it was already answered please point me to the answer.

Thanks,

Bdwyzr