wifi basic sample smart config not completed as expected

The wifi basic sample is not completing smart config with MSP430FR5739.

while with the home automation sample its working fine. I am trying to find out the reason for that issue.

The event of smartconfig done is arriving. Then after the wlan_stop, wlan_start the expected event is not arriving (HCI_EVNT_WLAN_UNSOL_CONNECT). in home automation sample its arriving.

I am trying to put my finger what is missing. 

I see that in home automation the init driver function is different it forces netapp_dhcp. it that critical in order to get the wifi up and running ?

// Force DHCP
netapp_dhcp((unsigned long *)pucIP_Addr, (unsigned long *)pucSubnetMask,
(unsigned long *)pucIP_DefaultGWAddr, (unsigned long *)pucDNS);

Thanks,

Roy