ip配置方法是编辑sudo nano /etc/network/interfaces
树莓派默认配置
auto lo
iface lo inet loopback
iface eth0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp
修改为静态ip的方法
1，老外的方法
sudo vi /etc/network/interfaces
To change to static IP address
cd /etc/networks
sudo nano interfaces
replace the line “iface eth0 inet dhcp” with
iface eth0 inet static
address 192.168.1.4
netmask 255.255.255.0
gateway 192.168.1.1
You should also take a look at the file /etc/resolv.conf
and check it has a nameserver entry (probably pointing at your default gateway) or direct to your ISP name servers.
nameserver 192.168.1.1
2.国内帖子
有些朋友一直在问如果配置网络，就简单写写吧，希望能帮助到大家
http://bbs.shumeipai.org/thread-158-1-1.html
1.配置ip地址
编辑sudo nano /etc/network/interfaces
自动获取ip的配置：
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
手动配置ip：
auto eth0
iface eth0 inet static
address 192.168.1.7
netmask 255.255.255.0
gateway 192.168.0.254
2.配置DNS
编辑 sudo nano /etc/resolv.conf
domain lan
search lan
nameserver 192.168.1.1
nameserver 192.168.99.100
注：nameserver 后面的ip就是dns服务器，根据自己的运营商情况填吧
电脑与树莓派网线直连
http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=22716
方案1：
on your pc
address 192.168.1.100
netmask 255.255.255.0
gateway 192.168.1.100
on your pi
/etc/network/interface
address 192.168.1.5
netmask 255.255.255.0
gateway 192.168.1.100
方案2：
Rpi
ip 172.16.1.1
mask 255.255.255.0
gateway 172.16.1.2 //172.16.1.1 works too
ubuntu
ip 172.16.1.21
sub 255.255.255.0
gateway 172.16.1.1 //172.16.1.10 works too
方案3：
That worked too.
Don't set the devices to be gateway for each other. All you need is something like this:
IP address of PC: 192.168.1.1
IP address of Rasperberry Pi: 192.168.1.2
Subnet mask on both: 255.255.255.0
Default gateway on both: 192.168.1.254