Raspbian Static IP
The main changes need to occur in /etc/dhcpcd.conf.
Find Interface Name
Before editing that file, we need to look up our ethernet interface name.
This used to be something easy like eth0, but Debian appears to have
changed interface names. Run ifconfig to see Debian’s current interfaces. With the Raspberry Pi 3 B+, there will also be a wifi interface shown as below:
enxb827ebb61344: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether b8:27:eb:b6:13:44 txqueuelen 1000 (Ethernet)
RX packets 24867 bytes 5952214 (5.6 MiB)
RX errors 1 dropped 350 overruns 0 frame 0
TX packets 2884 bytes 222449 (217.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlan0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether b8:27:eb:e3:46:11 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Notice enxb827ebb61344, the ridiculously ugly interface name that we’ll need when setting our static IP.
Updating /etc/dhcpcd.conf
With the interface name for ethernet written down, we can open up
/etc/dhcpcd.conf. There may already be a section for configuring a static IP address. Either way, we’ll want something like the following:
# Static IP for raspberry pi (192.168.1.10)
interface enxb827ebb61344
static ip_address=192.168.1.10/24
static routers=192.168.1.1
static domain_name_servers=192.168.1.1
This should set the Raspbian to have an IP address of 192.168.1.10, pointing to our router at 192.168.1.1.
Make sure to reboot afterwords.