Just My Life

ค้างคาใจอยู่นานแล้วครับสำหรับวิธีดูข้อมูล DHCP กรณีที่เราเป็น dhcp client ปกติ ifconfig ก็ดูได้เฉพาะว่าเราได้ ip อะไรแต่ดู gateway ไม่ได้

root@mrgill-laptop:~# ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 00:13:ce:34:94:ff
          inet addr:10.2.80.140  Bcast:10.2.80.255  Mask:255.255.255.0
          inet6 addr: fe80::213:ceff:fe34:94ff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:607200 errors:80 dropped:80 overruns:0 frame:0
          TX packets:588053 errors:0 dropped:4 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:365549369 (365.5 MB)  TX bytes:203281968 (203.2 MB)
          Interrupt:17 Base address:0xa000 Memory:b0101000-b0101fff

ครั้งจะไปดูใน /var/lib/dhcp3 ก็มีข้อมูลเยอะเสียจนไม่รู้ว่าอันไหนเป็นอันไหน

root@mrgill-laptop:/var/lib/dhcp3# ls -al
total 84
drwxr-xr-x  2 root root  4096 2010-02-01 09:47 .
drwxr-xr-x 73 root root  4096 2010-01-22 01:37 ..
-rw-r--r--  1 root root  1488 2010-01-23 12:49 dhclient-03fb849f-aed0-4560-8cb5-dd5336518d93-eth1.lease
-rw-r--r--  1 root root   497 2010-01-05 21:23 dhclient-03fb849f-aed0-4560-8cb5-dd5336518d93-wlan2.lease
-rw-r--r--  1 root root 10165 2010-02-01 17:46 dhclient-09f271e2-8327-47aa-a2b3-7d9e596d9953-eth0.lease
-rw-r--r--  1 root root  1100 2010-02-02 17:11 dhclient-1fe06dc5-f1ae-49c0-a8a7-4a8b41f72551-eth1.lease
-rw-r--r--  1 root root  1508 2010-01-19 17:31 dhclient-30ebb2f0-bfa4-45a2-ac06-23ec48487e7e-eth1.lease
-rw-r--r--  1 root root   992 2009-11-01 12:53 dhclient-36406c67-cbfa-471f-8ebf-6e41d6921e98-eth0.lease
-rw-r--r--  1 root root   767 2010-02-01 21:30 dhclient-55dee4d2-623f-445a-9b86-6bfd388aef8c-eth1.lease
-rw-r--r--  1 root root   769 2010-01-20 09:59 dhclient-55dee4d2-623f-445a-9b86-6bfd388aef8c-wlan2.lease
-rw-r--r--  1 root root   550 2009-12-17 22:08 dhclient-6ac2d0b1-a5d9-4ec9-825c-ccaaee54ff0e-eth1.lease
-rw-r--r--  1 root root   994 2009-10-23 20:32 dhclient-6ac2d0b1-a5d9-4ec9-825c-ccaaee54ff0e-wlan1.lease
-rw-r--r--  1 root root   497 2009-10-23 21:39 dhclient-6ac2d0b1-a5d9-4ec9-825c-ccaaee54ff0e-wlan2.lease
-rw-r--r--  1 root root  2475 2009-11-06 18:09 dhclient-7abf6b67-2f25-47c0-b9fb-fdc29501b75e-eth1.lease
-rw-r--r--  1 root root   448 2010-02-01 09:55 dhclient-845ea4c4-871f-4a1d-91e1-19b7c0cc5fe3-eth1.lease
-rw-r--r--  1 root root   550 2010-01-21 23:09 dhclient-98188c5a-e7d5-4515-8379-e00bd5274d85-eth1.lease
-rw-r--r--  1 root root   409 2010-01-28 10:42 dhclient-bcf946a9-63ac-411a-903f-7e0b3cfbbd6a-eth1.lease
-rw-r--r--  1 root root     0 2010-01-19 14:36 dhclient-cf8c29be-461b-4a22-abd6-b079d28eb017-eth1.lease
-rw-r--r--  1 root root  1030 2010-02-01 17:50 dhclient-d7e573a1-b0f6-408c-9ddc-8150ed91f473-eth1.lease
-rw-r--r--  1 root root  1100 2010-02-02 20:45 dhclient.leases

วันนี้เลยนำคำสั่ง nm-tool มาฝากครับ(ที่จริงคลิกดู information ที่ NetworkManager ก็ได้)

root@mrgill-laptop:~# nm-tool

NetworkManager Tool

State: connected

- Device: eth1  [Auto mrgill_wifi] ---------------------------------------------
  Type:              802.11 WiFi
  Driver:            ipw2200
  State:             connected
  Default:           yes
  HW Address:        00:13:CE:34:94:FF

  Capabilities:
    Speed:           54 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    truewifi:        Infra, 00:02:CF:94:60:E0, Freq 2412 MHz, Rate 54 Mb/s, Strength 27
    *mrgill_wifi:    Infra, 02:23:69:3A:F9:AE, Freq 2412 MHz, Rate 54 Mb/s, Strength 98 WPA WPA2
    true_homewifi:   Infra, 00:13:49:E4:26:9C, Freq 2437 MHz, Rate 54 Mb/s, Strength 65 WEP

  IPv4 Settings:
    Address:         10.2.80.140
    Prefix:          24 (255.255.255.0)
    Gateway:         10.2.80.254

    DNS:             10.2.80.254

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            8139too
  State:             unavailable
  Default:           no
  HW Address:        00:C0:9F:EE:19:BA

  Capabilities:
    Carrier Detect:  yes
    Speed:           10 Mb/s

  Wired Properties
    Carrier:         off

จากคำสั่งดังกล่าวเราก็จะเห็น Gateway และ DNS ด้วย