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pi1@raspberrypi ~ $ cat /etc/network/interfaces
auto lo
iface lo inet loopback
iface eth0 inet dhcp
auto wlan0
iface wlan0 inet manual
    address 192.168.2.1
    netmask 255.255.255.0
    wireless-channel 4
    wireless-essid pi-ad-hoc
    wireless-mode ad-hoc
pi2@raspberrypi ~ $ cat /etc/network/interfaces
auto lo
iface lo inet loopback
iface eth0 inet dhcp
auto wlan0
iface wlan0 inet manual
    address 192.168.2.2
    netmask 255.255.255.0
    wireless-channel 4
    wireless-essid pi-ad-hoc
    wireless-mode ad-hoc

pi1@raspberrypi ~ $ ifconfig wlan0
wlan0     Link encap:Ethernet  HWaddr ec:1a:59:46:8e:5a
          inet addr:192.168.2.1  Bcast:192.168.2.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:26 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
pi2@raspberrypi ~ $ ifconfig wlan0
wlan0     Link encap:Ethernet  HWaddr ec:1a:59:46:59:0a
          inet addr:192.168.2.2  Bcast:192.168.2.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:6 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

pi1@raspberrypi ~ $ iwconfig wlan0
wlan0     IEEE 802.11bg  ESSID:"pi-ad-hoc"  Nickname:"rtl_wifi"
          Mode:Ad-Hoc  Cell: 02:11:87:FA:4A:02   Bit Rate:54 Mb/s
          Sensitivity:0/0
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
pi2@raspberrypi ~ $ iwconfig wlan0
wlan0     IEEE 802.11bg  ESSID:"pi-ad-hoc"  Nickname:"rtl_wifi"
          Mode:Ad-Hoc  Cell: 02:11:87:C4:F2:01   Bit Rate:54 Mb/s
          Sensitivity:0/0
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

pi1@raspberrypi ~ $ route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         192.168.1.1     0.0.0.0         UG    0      0        0 eth0
192.168.1.0     *               255.255.255.0   U     0      0        0 eth0
192.168.2.0     *               255.255.255.0   U     0      0        0 wlan0

pi1@raspberrypi ~ $ sudo iwlist wlan0 scan
wlan0     Scan completed :
          Cell 01 - Address: 02:11:87:FA:4A:02
                    ESSID:"pi-ad-hoc"
                    Protocol:IEEE 802.11bg
                    Mode:Ad-Hoc
                    Frequency:2.427 GHz (Channel 4)
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality:0  Signal level:0  Noise level:0
          Cell 04 - Address: 02:11:87:C4:F2:01
                    ESSID:"pi-ad-hoc"
                    Protocol:IEEE 802.11bg
                    Mode:Ad-Hoc
                    Frequency:2.427 GHz (Channel 4)
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Signal level=100/100
pi2@raspberrypi ~ $ sudo iwlist wlan0 scan
wlan0     Scan completed :
          Cell 01 - Address: 02:11:87:C4:F2:01
                    ESSID:"pi-ad-hoc"
                    Protocol:IEEE 802.11bg
                    Mode:Ad-Hoc
                    Frequency:2.427 GHz (Channel 4)
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality:0  Signal level:0  Noise level:0
          Cell 02 - Address: 02:11:87:FA:4A:02
                    ESSID:"pi-ad-hoc"
                    Protocol:IEEE 802.11bg
                    Mode:Ad-Hoc
                    Frequency:2.427 GHz (Channel 4)
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Signal level=100/100

sudo iwconfig wlan0 ap (some address)

auto wlan0
allow-hotplug wlan0
iface wlan0 inet static
wireless-essid "MYPINET"
wireless-channel 3
wireless-mode ad-hoc
wireless-ap 11:5F:02:38:5C:45
address 192.168.10.1
netmask 255.255.255.0

ctrl_interface=DIR=/run/wpa_supplicant GROUP=netdev
update_config=1
ap_scan=2

network={
  ssid="pihoc_wpa"
  mode=1
  frequency=2462
  proto=WPA
  key_mgmt=WPA-NONE
  pairwise=NONE
  group=TKIP
  psk="password"
}

getent group netdev

sudo usermod -a -G netdev userName

auto wlan0
allow-hotplug wlan0
iface wlan0 inet static
   address 10.10.2.1
   netmask 255.255.255.0
pre-up wpa_supplicant -B -D nl80211 -i wlan0 -c /etc/wpa_supplicant-adhoc.conf

ssh 10.10.2.2