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busybox 에 있는 dhcp server 를 이용하여 세팅하는 방법을 정리한다.
udhcpd 설정 파일
/etc/udhcpd.conf
# Sample udhcpd configuration file (/etc/udhcpd.conf)# The start and end of the IP lease blockstart 192.168.0.20 #default: 192.168.0.20end 192.168.0.254 #default: 192.168.0.254# The interface that udhcpd will useinterface eth0 #default: eth0# The maximim number of leases (includes addressesd reserved# by OFFER's, DECLINE's, and ARP conficts#max_leases 254 #default: 254# If remaining is true (default), udhcpd will store the time# remaining for each lease in the udhcpd leases file. This is# for embedded systems that cannot keep time between reboots.# If you set remaining to no, the absolute time that the lease# expires at will be stored in the dhcpd.leases file.#remaining yes #default: yes# The time period at which udhcpd will write out a dhcpd.leases# file. If this is 0, udhcpd will never automatically write a# lease file. (specified in seconds)#auto_time 7200 #default: 7200 (2 hours)# The amount of time that an IP will be reserved (leased) for if a# DHCP decline message is received (seconds).#decline_time 3600 #default: 3600 (1 hour)# The amount of time that an IP will be reserved (leased) for if an# ARP conflct occurs. (seconds#conflict_time 3600 #default: 3600 (1 hour)# How long an offered address is reserved (leased) in seconds#offer_time 60 #default: 60 (1 minute)# If a lease to be given is below this value, the full lease time is# instead used (seconds).#min_lease 60 #defult: 60# The location of the leases file#lease_file /var/lib/misc/udhcpd.leases #defualt: /var/lib/misc/udhcpd.leases# The location of the pid file#pidfile /var/run/udhcpd.pid #default: /var/run/udhcpd.pid# Everytime udhcpd writes a leases file, the below script will be called.# Useful for writing the lease file to flash every few hours.#notify_file #default: (no script)#notify_file dumpleases # <--- usefull for debugging# The following are bootp specific options, setable by udhcpd.#siaddr 192.168.0.22 #default: 0.0.0.0#sname zorak #default: (none)#boot_file /var/nfs_root #default: (none)# The remainer of options are DHCP options and can be specifed with the# keyword 'opt' or 'option'. If an option can take multiple items, such# as the dns option, they can be listed on the same line, or multiple# lines. The only option with a default is 'lease'.#Examlesopt dns 8.8.8.8 8.8.4.4option subnet 255.255.255.0opt router 192.168.0.1# opt wins 192.168.10.10#option dns 129.219.13.81 # appened to above DNS servers for a total of 3#option domain localoption lease 864000 # 10 days of seconds# Currently supported options, for more info, see options.c#subnet#timezone#router#timesvr#namesvr#dns#logsvr#cookiesvr#lprsvr#bootsize#domain#swapsvr#rootpath#ipttl#mtu#broadcast#wins#lease#ntpsrv#tftp#bootfile
ifconfig 설정
/etc/network/interfaces 파일에 다음과 같은 내용을 추가한다.
auto eth0iface eth0 inet staticaddress 192.168.0.1netmask 255.255.255.0#gateway 192.168.0.254broadcast 192.168.0.255
주의할점은.. dhcp 서버에서 route 주소를 eth0 의 주소로 써야한다는 것이다.
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