My Raspberry Pi B+ is running Raspbian (Linux version 3.18.11+) updated, etc.

It's connected to the network by ethernet. I want a static IP, and have assigned it one in /etc/network/interfaces (shown below). However, every boot it requests an address via DHCP and is assigned one! Both the static and dynamic addresses work to access the machine on the network.

Where can I stop the DHCP address from being requested and assigned??


auto lo
iface lo inet loopback

auto eth0
allow-hotplug eth0
iface eth0 inet static

auto wlan0
allow-hotplug wlan0
iface wlan0 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

auto wlan1
allow-hotplug wlan1
iface wlan1 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

ip addr show eth0

2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether b8:27:eb:44:bb:23 brd ff:ff:ff:ff:ff:ff
inet brd scope global eth0
   valid_lft forever preferred_lft forever
inet brd scope global secondary eth0
   valid_lft forever preferred_lft forever


eth0      Link encap:Ethernet  HWaddr b8:27:eb:44:bb:23  
          inet addr:  Bcast:  Mask:
          RX packets:11484 errors:0 dropped:4 overruns:0 frame:0
          TX packets:10212 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:4178807 (3.9 MiB)  TX bytes:4019638 (3.8 MiB)

lo        Link encap:Local Loopback  
          inet addr:  Mask:
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)


ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
  • Can you tell us output of ifconfig ? Jun 15, 2015 at 3:36
  • added ifconfig above
    – t0vana
    Jun 15, 2015 at 4:13
  • My bad. I meant "ifconfig -a". Can you modify your log above ? Jun 15, 2015 at 4:16
  • The output with the -a flag is identical to above.
    – t0vana
    Jun 15, 2015 at 4:43
  • What's is the content of wpa_supplicant.conf ?
    – Tyson
    Jun 16, 2015 at 1:51

5 Answers 5


I had this same issue.

I assume you are using 2015-05-05 build of Rasbian. In this build, the static IP is set in /etc/dhcpcd.conf.

You should:

  1. Revert your changes in /etc/network/interfaces back to default
  2. Put the ip information in your /etc/dhcpcd.conf to configure a static IP, replacing whatever your interface is for wlan0
  3. Reboot


# what I did
# this goes in /etc/dchpcd.conf for static ip assignment 
interface wlan0
 static ip_address=
 static routers=
 static domain_name_servers=


$ ip addr
.... <snip>
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether e8:4e:06:xx:xx:xx brd ff:ff:ff:ff:ff:ff
    inet brd scope global wlan0
       valid_lft forever preferred_lft forever
    inet brd scope global secondary wlan0
       valid_lft forever preferred_lft forever


$ ip addr
.... <snip>
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether e8:4e:06:xx:xx:xx brd ff:ff:ff:ff:ff:ff
    inet brd scope global wlan0
       valid_lft forever preferred_lft forever

These links are where I found my answer:

  • Thank you, success! I did have to remember to set eth0 to the new default of manual instead of the old default of dhcp in /etc/network/interfaces
    – t0vana
    Aug 31, 2015 at 18:31

Looking at the Debian Network Configuration documentation and other documentation online, my understanding is that allow-hotplug is only necessary for removable network adapters, or if you're using dhcp on an adapter that might not be present at boot in order to avoid long dhcp timeouts. Try removing the allow-hotplug eth0 line if you're using a static configuration.

I tried replicating your problem with several variations, but only obtained a single IP address as show with ip addr. Do you by any chance have anything under the various /etc/network/if-* directories?

  • if-down.d: openvpn resolvconf upstart wpasupplicant if-post-down.d: avahi-daemon wireless-tools wpasupplicant if-pre-up.d: wireless-tools wpasupplicant if-up.d: 000resolvconf avahi-daemon mountnfs openssh-server openvpn upstart wpasupplicant
    – t0vana
    Jun 16, 2015 at 4:18
  • commenting out the allow-hotplug eth0 line has no effect
    – t0vana
    Jun 16, 2015 at 6:31

Another thing you could do to get a static IP (without all that) is to first find you MAC address by typing this:

ifconfig eth0

and looking for HWaddr (and after that is your mac address). After that go onto your router admin page and go to DHPC or IP reservations (on my router it was in LAN setup). Then add the MAC address and choose and IP. You don't have to add the MAC address as most router's have the option to just pick the IP (the name will be the name you set in raspi-config hostname).

Will :3

ask questions

  • I put the command ifconfig eth0 for other users (I know you know)
    – Panda
    Jun 15, 2015 at 18:23
  • That's a great (round-about) solution to this: adding the MAC address to the router's DHCP reservations. However, that won't work for this setup...
    – t0vana
    Jun 16, 2015 at 4:12
  • Yeh sorry, I just put it just in case you hadnt' thought of it ;)
    – Panda
    Jun 19, 2015 at 20:08

I had the same problem. I had configured x.x.x.250 in /etc/network/interfaces and was getting x.x.x.20 as well, although that did not exist anywhere.

I'm using ethernet, and because I do not need dhcp I disabled the dhcpcd service as follows:

sudo systemctl stop dhcpcd
sudo systemctl disable dhcpcd
sudo systemctl daemon-reload
sudo systemctl restart networking

(Note that if you're doing this over SSH as I was, then the last command will probably hang your SSH. So ~.Enter to get a functioning local command prompt back then ssh in again.)

This seems to have worked for me.

  • The dhcp package could probably be purged too if you're not going to put the static IP in /etc/dhcpcd.conf Jan 5, 2017 at 15:03
  • i had the same problem. but did not want to delete the dhcpcd service. so i shutdown the raspi, pulled of the power cable, and started it again. the previously dynamically assigend ips finally disappeared.
    – lsblsb
    Nov 11, 2018 at 13:38

Here is the solution to configure multiple interfaces:Multiple IP addresses on one Interface.

  • 1
    Can you edit your answer to summarise the contents of the link, in case of future link death. Thanks. Nov 18, 2015 at 16:55

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