openwrt 修改默认 IP

在trunk目录下执行

mkdir -p files/etc/config

然后在 config 目录下新建network文件写入如下内容

config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'

config globals 'globals'
option ula_prefix 'fd3b:272f:a046::/48'

config interface 'lan'
option ifname 'eth0.1'
option force_link '1'
#    option macaddr '7a:20:00:02:5f:74'
option type 'bridge'
option proto 'static'
option ipaddr '192.168.20.1'
option netmask '255.255.255.0'
option ip6assign '60'

config interface 'wan'
option ifname 'eth0.2'
option force_link '1'
#    option macaddr '7a:20:00:02:5f:75'
option proto 'dhcp'

config interface 'wan6'
option ifname 'eth0.2'
option proto 'dhcpv6'

config interface 'ppp0'
option ifname 'ppp0'
option service 'evdo'
option username 'card'
option password 'card'
option device '/dev/ttyUSB0'
option proto '3g'
option dialnumber '#777'
option apn 'ctnet'
option ipv6 'auto'

config switch
option name 'rt305x'
option reset '1'
option enable_vlan '1'

config switch_vlan
option device 'rt305x'
option vlan '1'
option ports '0 1 2 3 6t'

config switch_vlan
option device 'rt305x'
option vlan '2'
option ports '4 6t'

network 内容可根据需求更改内容。原理是 make 后 files/etc/config/network 会覆盖开发板的 network 文件