SoftAP0 stop working after net.ipv4.ip_forward=1 , any turn-arround ?

Hi all,

Willing to use my BBGW as an hotspot , i activate net.ipv4.ip_forward=1 in sysctl.conf
and then AP stop working , I see it with my phone and computer , but nothing responding when selection the BeagleBoneXXX SSID.

any idea ?

thanks in advance.

Stéphane