Connecting iscsi disk to CentOS 6.5 system

A bit more info: the readyNas has 2 network interfaces on 192.168.1.0.24 and 192.168.168.0/24. I am attempting this connection via the 192.168.1.0/24 interface (target address is 192.168.1.252), as that is on the same network as the client. The discovery reported the 2 target groups via each interface:

192.168.168.252:3260,1 iqn.1994-11.com.netgear:ngnas1:a901f7d2:group1
192.168.1.252:3260,1 iqn.1994-11.com.netgear:ngnas1:a901f7d2:group1
192.168.168.252:3260,1 iqn.1994-11.com.netgear:ngnas1:fbc542ca:group2
192.168.1.252:3260,1 iqn.1994-11.com.netgear:ngnas1:fbc542ca:group2

I set the node login to the group2 target via the 192.168.1.252:3260 portal, however the "connection refused" messages are being reported as coming from the other (192.168.168.252) interface. It looks like the problem is that when restarting iscsi, the connection is being attempted via the wrong interface.

[root@uka4-ob ~]# iscsiadm --mode node iqn.1994-11.com.netgear:ngnas1:a901f7d2:group1 --portal 192.168.1.252:3260 --login

[root@uka4-ob ~]# /etc/init.d/iscsi restart
Stopping iscsi: [ OK ]
Starting iscsi: iscsiadm: Could not login to [iface: default, target: iqn.1994-11.com.netgear:ngnas1:fbc542ca:group2, portal: 192.168.168.252,3260].
iscsiadm: initiator reported error (8 - connection timed out)
iscsiadm: Could not login to [iface: default, target: iqn.1994-11.com.netgear:ngnas1:a901f7d2:group1, portal: 192.168.168.252,3260].
iscsiadm: initiator reported error (8 - connection timed out)
iscsiadm: Could not log into all portals

Is there a way for me to configure the system so that it only tries to login to the portal that I specify?