Your hostapd is fine. I suspect your connected interface is not bridged to your wlan0, or you do not have a dhcpd running.

Options:

1. Install DHCP server(i.e. dnsmasq).

2. Bridge your wlan0 to ethx.

   brctl addbr br0

   brctl addif br0 eth0

then add to your hostapd.conf

bridge=br0

Your hostapd is fine. I suspect your connected interface is not bridged to your wlan0, or you do not have a dhcpd running.

Options:

1. Install DHCP server(i.e. dnsmasq).

2. Bridge your wlan0 to ethx.

   brctl addbr br0

   brctl addif br0 ethx

then add to your hostapd.conf

bridge=br0