gistfile1.txt

Plug in one interface

use ip addr to work out which interfaces there are and which is the WAN interface 

Set up /etc/networks/interfaces 

#loopback
auto lo
iface lo inet loopback

#primary interface, to internet
auto eth0
iface eth0 inet dhcp

#Bridged interfaces 
auto br0
iface br0 inet static
        address 192.168.3.1
        netmask 24
        bridge_ports enxc0742bffdd77 wlan0

#we need to stop systemd-resolved:this interfers with dnsmasq
sudo systemctl disable systemd-resolved
sudo systemctl stop systemd-resolved

#Silly race conditions - disable network manager. Sometimes it takes a little longer to get an IP. We don't need it anyway

sudo systemctl stop NetworkManager.service
sudo systemctl disable NetworkManager.service

/etc/dnsmasq.conf

# Add other name servers here, with domain specs if they are for
# non-public domains.
#server=/localnet/192.168.0.1
server=8.8.8.8

# If you want dnsmasq to listen for DHCP and DNS requests only on
# specified interfaces (and the loopback) give the name of the
# interface (eg eth0) here.
# Repeat the line for more than one interface.
interface=br0
# Or you can specify which interface _not_ to listen on
except-interface=eth0

# Uncomment this to enable the integrated DHCP server, you need
# to supply the range of addresses available for lease and optionally
# a lease time. If you have more than one network, you will need to
# repeat this for each network on which you want to supply DHCP
# service.
dhcp-range=192.168.3.50,192.168.3.150,12h

/etc/hostapd.conf - from armbian defaults


# armbian hostapd configuration example
#
# nl80211 mode


ssid=TEST
interface=wlan0
hw_mode=g
channel=5
#bridge=br0
driver=nl80211

logger_syslog=0
logger_syslog_level=0
wmm_enabled=1
wpa=2
preamble=1

wpa_psk=66eb31d2b48d19ba216f2e50c6831ee11be98e2fa3a8075e30b866f4a5ccda27
wpa_passphrase=12345678
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
auth_algs=1
macaddr_acl=0

noscan=1

## IEEE 802.11n
ieee80211n=1
ht_capab=[HT40-][SHORT-GI-40][SHORT-GI-40][DSSS_CCK-40]
country_code=US
ieee80211d=1
## IEEE 802.11n

### IEEE 802.11a
#hw_mode=a
### IEEE 802.11a

### IEEE 802.11ac
#ieee80211ac=1
#vht_capab=[MAX-MPDU-11454][SHORT-GI-80][TX-STBC-2BY1][RX-STBC-1][MAX-A-MPDU-LE$
#vht_oper_chwidth=1
#vht_oper_centr_freq_seg0_idx=42
### IEEE 802.11ac

# controlling enabled
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0