Most default to Full and DSS LITE should be defaulting to this as well. Check in the test.log to verify. If you are using an Intel NIC then you need to set this to 2 (full).

http://www.intel.com/support/network/sb/cs-009209.htm

From Test.log:

*-----------------------------------------------------------------------------*
ethtool eth0
*-----------------------------------------------------------------------------*

Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
Link detected: yes