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JKISTER / Sys-HostAddr-0.991 / NOTES 
ifconfigs:

Slackware 12
eth0      Link encap:Ethernet  HWaddr 00:60:08:9A:20:54 
          inet addr:10.0.0.171  Bcast:10.0.0.175  Mask:255.255.255.248         
          inet6 addr: fe80::260:8ff:fe9a:2054/64 Scope:Link 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 
          RX packets:6883796 errors:0 dropped:0 overruns:0 frame:0 
          TX packets:7407322 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:1000 
          RX bytes:1176340119 (1.0 GiB)  TX bytes:971282220 (926.2 MiB) 
          Interrupt:10 Base address:0xe400 
 
eth1      Link encap:Ethernet  HWaddr 00:50:04:C1:6E:9C 
          inet addr:10.10.10.10  Bcast:10.10.10.255  Mask:255.255.255.0 
          inet6 addr: fe80::250:4ff:fec1:6e9c/64 Scope:Link 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 
          RX packets:362589 errors:0 dropped:0 overruns:0 frame:0 
          TX packets:68804 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:1000 
          RX bytes:76791617 (73.2 MiB)  TX bytes:8630153 (8.2 MiB) 
          Interrupt:12 Base address:0x6000 
 
lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0 
          inet6 addr: ::1/128 Scope:Host 
          UP LOOPBACK RUNNING  MTU:16436  Metric:1 
          RX packets:8558002 errors:0 dropped:0 overruns:0 frame:0 
          TX packets:8558002 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:0 
          RX bytes:810375725 (772.8 MiB)  TX bytes:810375725 (772.8 MiB) 
#####################################################################

RHEL 5
eth0      Link encap:Ethernet  HWaddr 00:0D:29:E6:3D:CB
          inet addr:10.0.0.134  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:feb6:2dcb/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:717960 errors:0 dropped:0 overruns:0 frame:0
          TX packets:300550 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:95051326 (90.6 MiB)  TX bytes:115335543 (109.9 MiB)
          Interrupt:177 Base address:0x1400

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:5616664 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5616664 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:616629734 (588.0 MiB)  TX bytes:616629734 (588.0 MiB)

sit0      Link encap:IPv6-in-IPv4
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
#####################################################################

FREEBSD 6.1-RELEASE:
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        options=8<VLAN_MTU>
        inet6 fe80::260:97ff:fec3:b458%xl0 prefixlen 64 scopeid 0x1 
        inet 172.24.14.18 netmask 0xfffffc00 broadcast 172.24.15.255
        inet 172.24.14.28 netmask 0xfffffc00 broadcast 172.24.15.255
        ether 00:60:97:c3:b4:58
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        options=8<VLAN_MTU>
        inet6 fe80::2d0:b7ff:fe88:cd91%fxp0 prefixlen 64 scopeid 0x2 
        inet 10.0.0.42 netmask 0xffffff80 broadcast 10.0.0.127
        ether 00:d0:b7:88:cd:91
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
plip0: flags=108810<POINTOPOINT,SIMPLEX,MULTICAST,NEEDSGIANT> mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
        inet6 ::1 prefixlen 128 
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4 
        inet 127.0.0.1 netmask 0xff000000 
######################################################################

DEBIAN LINUX 2.6:
eth0      Link encap:Ethernet  HWaddr 00:09:3D:10:30:0F  
          inet addr:10.0.0.14  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: fe80::209:3dff:fe10:300f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:7144152 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5458726 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1849676368 (1.7 GiB)  TX bytes:975642847 (930.4 MiB)
          Interrupt:193 

eth1      Link encap:Ethernet  HWaddr 00:09:3D:10:30:10  
          inet addr:192.168.128.129  Bcast:192.168.131.255  Mask:255.255.252.0
          inet6 addr: fe80::209:3dff:fe10:3010/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:378122 errors:0 dropped:0 overruns:0 frame:0
          TX packets:925514 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:31414290 (29.9 MiB)  TX bytes:1367006880 (1.2 GiB)
          Interrupt:201 

eth1:1    Link encap:Ethernet  HWaddr 00:09:3D:10:30:10  
          inet addr:10.2.3.4  Bcast:10.2.3.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:201 Base address:0x100 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:62255 errors:0 dropped:0 overruns:0 frame:0
          TX packets:62255 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:4582175 (4.3 MiB)  TX bytes:4582175 (4.3 MiB)

sit0      Link encap:IPv6-in-IPv4  
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
######################################################################

SOLARIS 10:
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000 
bge0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 10.0.0.48 netmask ffffff00 broadcast 10.0.0.255
bge1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
        inet 10.216.210.9 netmask ffffff00 broadcast 10.216.210.255
bge1:1: flags=1000803<UP,BROADCAST,MULTICAST,IPv4> mtu 1500 index 3
        inet 10.10.10.1 netmask ffffff00 broadcast 10.10.10.255
bge1: flags=2000840<RUNNING,MULTICAST,IPv6> mtu 1500 index 3
        inet6 fe80::209:3dff:fe13:33b8/10 
lo0: flags=2002000848<LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
        inet6 ::1/128 
######################################################################

SOLARIS 7:
lo0: flags=849<UP,LOOPBACK,RUNNING,MULTICAST> mtu 8232
        inet 127.0.0.1 netmask ff000000 
hme0: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST> mtu 1500
        inet 10.0.0.18 netmask ffffff80 broadcast 10.0.0.127
        ether 8:0:20:a7:3d:56 
hme0:1: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST> mtu 1500
        inet 10.0.0.4 netmask ffffff80 broadcast 10.0.0.127
hme0:3: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST> mtu 1500
        inet 10.0.0.8 netmask ffffff80 broadcast 10.0.0.127
hme0:4: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST> mtu 1500
        inet 10.0.0.9 netmask ffffff80 broadcast 10.0.0.127
hme0:5: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST> mtu 1500
        inet 10.0.0.6 netmask ffffff80 broadcast 10.0.0.127
hme1: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST> mtu 1500
        inet 172.24.14.3 netmask fffffc00 broadcast 172.24.15.255
        ether 8:0:20:a7:3d:56 
######################################################################

OSX 10.5.8:
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
    inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 
    inet 127.0.0.1 netmask 0xff000000 
    inet6 ::1 prefixlen 128 
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    ether 00:1f:5b:f3:9a:a6 
    media: autoselect status: inactive
    supported media: autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,hw-loopback> 10baseT/UTP <full-duplex,flow-control> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,hw-loopback> 100baseTX <full-duplex,flow-control> 1000baseT <full-duplex> 1000baseT <full-duplex,hw-loopback> 1000baseT <full-duplex,flow-control> none
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    inet 172.16.5.203 netmask 0xffffff00 broadcast 172.16.5.255
    ether 00:1e:c2:b0:69:ee 
    media: autoselect status: active
    supported media: autoselect
fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 2030
    lladdr 00:1f:f3:ff:fe:26:c3:c0 
    media: autoselect <full-duplex> status: inactive
    supported media: autoselect <full-duplex>
vmnet8: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    inet 172.16.150.1 netmask 0xffffff00 broadcast 172.16.150.255
    ether 00:50:56:c0:00:08 
vmnet1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    inet 192.168.224.1 netmask 0xffffff00 broadcast 192.168.224.255
    ether 00:50:56:c0:00:01 
en3: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
    inet6 fe80::21c:42ff:fe00:8%en3 prefixlen 64 scopeid 0x9 
    inet 10.211.55.2 netmask 0xffffff00 broadcast 10.211.55.255
    ether 00:1c:42:00:00:08 
    media: autoselect status: active
    supported media: autoselect
en4: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
    inet6 fe80::21c:42ff:fe00:9%en4 prefixlen 64 scopeid 0xa 
    inet 10.37.129.2 netmask 0xffffff00 broadcast 10.37.129.255
    ether 00:1c:42:00:00:09 
    media: autoselect status: active
    supported media: autoselect
vboxnet0: flags=8842<BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    ether 00:76:62:00:00:00 
######################################################################

BUSYBOX (linux 2.6.24, codesourcery libc, busybox tools):
bsl0      Link encap:Ethernet  HWaddr 00:1D:FE:56:9B:CD  
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eth0      Link encap:Ethernet  HWaddr 00:1D:FE:BB:7C:06  
          inet addr:192.168.0.11  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:44501 errors:0 dropped:0 overruns:0 frame:0
          TX packets:28484 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:62413536 (59.5 MiB)  TX bytes:2607992 (2.4 MiB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:2654 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2654 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:393371 (384.1 KiB)  TX bytes:393371 (384.1 KiB)

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:10.121.184.248  P-t-P:10.174.201.64  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:381 errors:0 dropped:0 overruns:0 frame:0
          TX packets:468 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:95988 (93.7 KiB)  TX bytes:100782 (98.4 KiB)
######################################################################

Gentoo (Linux bluesata 2.6.31-gentoo-r6)
eth0      Link encap:Ethernet  HWaddr 00:1a:92:97:3e:b9
          inet addr:192.168.1.55  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:195344405 errors:0 dropped:0 overruns:0 frame:0
          TX packets:119899377 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1722338088 (1.6 GiB)  TX bytes:3930628775 (3.6 GiB)
          Interrupt:11 Base address:0x8000

eth1      Link encap:Ethernet  HWaddr 00:1a:92:97:41:00
          inet addr:192.168.3.1  Bcast:192.168.3.255  Mask:255.255.255.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:54 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:4338 (4.2 KiB)
          Interrupt:5 Base address:0x6000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:644557006 errors:0 dropped:0 overruns:0 frame:0
          TX packets:644557006 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1235017685 (1.1 GiB)  TX bytes:1235017685 (1.1 GiB)
######################################################################

Windows XP:
Windows IP Configuration

        Host Name . . . . . . . . . . . . : example-machine
        Primary Dns Suffix  . . . . . . . : 
        Node Type . . . . . . . . . . . . : Unknown
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No
        DNS Suffix Search List. . . . . . : example.net

Ethernet adapter Wireless Network Connection:

        Connection-specific DNS Suffix  . : example.net
        Description . . . . . . . . . . . : Broadcom 802.11b/g WLAN
        Physical Address. . . . . . . . . : C4-17-FE-8C-73-6B
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 10.1.1.215
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 10.1.1.1
        DHCP Server . . . . . . . . . . . : 10.1.1.3
        DNS Servers . . . . . . . . . . . : 10.232.4.14
        Lease Obtained. . . . . . . . . . : Thursday, March 11, 2010 3:13:11 AM
        Lease Expires . . . . . . . . . . : Friday, March 12, 2010 3:13:11 AM

PPP adapter example:

        Connection-specific DNS Suffix  . : 
        Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
        Physical Address. . . . . . . . . : 00-53-45-00-00-00
        Dhcp Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 10.118.22.29
        Subnet Mask . . . . . . . . . . . : 255.255.255.255
        Default Gateway . . . . . . . . . : 
        DNS Servers . . . . . . . . . . . : 10.118.13.50
                                            10.118.13.51


#####################################################################
WINDOWS 7:
Windows IP Configuration

   Host Name . . . . . . . . . . . . : jexample-e6400
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : example.net

Ethernet adapter Local Area Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : internal.example.com
   Description . . . . . . . . . . . : TAP-Win32 Adapter V8
   Physical Address. . . . . . . . . : 00-FF-BF-2E-6C-69
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Bluetooth Network Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
   Physical Address. . . . . . . . . : 0C-60-76-8F-AF-5C
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

   Connection-specific DNS Suffix  . : example.net
   Description . . . . . . . . . . . : Intel(R) WiFi Link 5100 AGN
   Physical Address. . . . . . . . . : 00-24-D6-3D-1B-D2
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::b1de:3d88:2241:599f%13(Preferred)
   IPv4 Address. . . . . . . . . . . : 10.9.1.214(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Wednesday, February 24, 2010 11:21:18 PM
   Lease Expires . . . . . . . . . . : Sunday, March 07, 2010 5:08:55 PM
   Default Gateway . . . . . . . . . : 10.9.1.1
   DHCP Server . . . . . . . . . . . : 10.9.1.3
   DHCPv6 IAID . . . . . . . . . . . : 234890454
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-8D-A2-ED-00-24-E8-DE-6D-F4
   DNS Servers . . . . . . . . . . . : 10.0.0.14
                                       10.0.0.14
   NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : internal.example.com
   Description . . . . . . . . . . . : Intel(R) 82567LM Gigabit Network Connection
   Physical Address. . . . . . . . . : 00-24-E8-DE-6D-F4
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.internal.example.com:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 12:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:3c79:3898:9d8d:a5df(Preferred)
   Link-local IPv6 Address . . . . . : fe80::3c79:3898:9d8d:a5df%12(Preferred)
   Default Gateway . . . . . . . . . : ::
   NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter isatap.example.net:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : example.net
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{7A68CFEB-7E9B-46B2-81CC-A21369B7C2EA}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
######################################################################

Ubuntu 10.04 LTS (2.6.32-37-server)
david@sideshowbob:~$ ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 80:ee:73:14:7a:25 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.104/24 brd 192.168.0.255 scope global eth0
    inet 192.168.0.101/24 scope global secondary eth0
    inet6 fe80::82ee:73ff:fe14:7a25/64 scope link valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000
    link/ether 00:05:5d:0d:12:e9 brd ff:ff:ff:ff:ff:ff
    inet 192.168.7.104/24 brd 192.168.7.255 scope global eth1
    inet 192.168.7.101/24 scope global secondary eth1
    inet6 fe80::205:5dff:fe0d:12e9/64 scope link valid_lft forever preferred_lft forever