cmd:dhcpcd 

Info from slackware 

AUTHORS
      v.<1.3
      Yoichi Hariguchi <yoichi@fore.com>
      v.1.3
      Sergei Viznyuk <sv@phystech.com>

Usage 

dhcpcd -k
ifconfig eth0 down
dhcpcd

$ route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
131.162.160.0   *               255.255.248.0   U     0      0        0 eth0
loopback        *               255.0.0.0       U     0      0        0 lo
default         vlan-160.acadia 0.0.0.0         UG    0      0        0 eth0

Usage explanation 

All info about DHCP setting 

/etc/dhcpc/dhcpcd-eth0.info

Stop the DHCP lease 

dhcpcd -k              # in /sbin

Stop the eth0 card 

ifconfig eth0 down

start the DHCP client daemon & 

dhcpcd

Renew lease 

?

Manual configure eth0 

ifconfig eth0 131.162.131.132 broadcast 131.162.167.255 netmask 255.255.248.0

Show route table 

route          # in /sbin

Add route table 

route add default gw 131.162.128.1 netmask 0.0.0.0 metric 1
route add -net 131.162.160.0  netmask '255.255.248.0' dev eth0
route add -net default gw 131.162.160.1 netmask '0.0.0.0' dev eth0