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cmd:pump

Usage

Acquire Lease

pump

Acquire Info

% pump -s
Device eth0
        IP: 192.168.2.12
        Netmask: 255.255.255.0
        Broadcast: 192.168.2.255
        Network: 192.168.2.0
        Boot server 192.168.2.1
        Next server 0.0.0.0
        Gateway: 192.168.2.1
        Gateways: 192.168.2.1
        Hostname: cxmr.dyndns.org
        Domain: no-domain-set.bellcanada
        Nameservers: 192.168.2.1 192.168.2.1
        Renewal time: Tue Oct 31 22:44:11 2006
        Expiration time: Wed Nov  1 00:14:11 2006

% pump -i eth0 --status
Device eth0
        IP: 192.168.2.12
        Netmask: 255.255.255.0
        Broadcast: 192.168.2.255
        Network: 192.168.2.0
        Boot server 192.168.2.1
        Next server 0.0.0.0
        Gateway: 192.168.2.1
        Gateways: 192.168.2.1
        Hostname: cxmr.dyndns.org
        Domain: no-domain-set.bellcanada
        Nameservers: 192.168.2.1 192.168.2.1
        Renewal time: Tue Oct 31 22:44:11 2006
        Expiration time: Wed Nov  1 00:14:11 2006

$ pump
pump: must be run as root

Help

NAME
      pump - configure network interface via BOOTP or DHCP protocol

DESCRIPTION
      pump  is a daemon that manages network interfaces that are controlled
       by either the DHCP or BOOTP protocol.

Once pump is managing an interface, you can run  pump  to  query  the
status of that interface.  For example,
/sbin/pump -i eth0 --status
will print the current status of device eth0.

COMMAND-LINE OPTIONS
      switch   long option           description
      -h       --hostname=hostname   Hostname to request
      -i       --interface=iface     Interface to configure (normally eth0)
      -k       --kill                Kill daemon (and disable all interfaces)
      -r       --release             Release interface
      -R       --renew               Force immediate lease renewal
      -s       --status              Display interface status
      -?       --help                Show this help message
               --usage               Display brief usage message

LOGGING
      Pump  logs  a  good  deal of information to syslog, much of it at the
      DEBUG level. If you're having trouble, it's a good idea  to  turn  up
      syslog's logging level.

cmd:dhclient

Renew lease

killall dhclient
# -- otherwise there would be multi-instances of dhclient which will
     cause trouble. (two lease in /var/state/dhcp/dhclient.leases)

ifconfig eth0 down

dhclient

or,

dhclient eth0

ifconfig

Acquire Info for RH8.0

$ cat /var/lib/dhcp/dhclient.leases
lease {
  interface "eth0";
  fixed-address 192.168.0.255;
  option subnet-mask 255.255.255.0;
  option time-offset -18000;
  option routers 192.168.0.1;
  option dhcp-lease-time 21600;
  option dhcp-message-type 5;
  option domain-name-servers 192.168.0.1;
  option dhcp-server-identifier 192.168.0.100;
  option nis-domain "domain.org";
  option domain-name "domain.org";
  renew 5 2002/12/13 06:44:25;
  rebind 5 2002/12/13 09:07:10;
  expire 5 2002/12/13 09:52:10;
}

Acquire Info for RH6.2

cat /var/state/dhcp/dhclient.leases

documented on: 2000.10.15 Sun 00:41:40