Config Ubuntu 6.10 NIC with multi-IP addresses

Discussion in 'Server Operation' started by domino, Nov 5, 2006.

  1. domino

    domino New Member

    Does anyone know how to give multiple IP address to a single network card. I'm using Ubuntu 6.10. This is my current interfaces file.

    Code:
    # The loopback network interface
    auto lo
    iface lo inet loopback
    
    # The primary network interface
    auto eth0
    #iface eth0 inet dhcp
    iface eth0 inet static
    	address 192.168.0.20
    	netmask 255.255.255.0
    	network 192.168.0.0
    	broadcast 192.168.0.255
    	gateway 192.168.0.10
     
  2. falko

    falko Super Moderator

  3. domino

    domino New Member

    Ahh, I forgot to add the IP's to the hosts file :)

    Thanks!
     
  4. domino

    domino New Member

    Shoold I be conserned about this waring? this message on showed after adding all 5 IP's in /etc/hosts
    Code:
    user@linux:~# /etc/init.d/networking restart
     * Reconfiguring network interfaces...
    SIOCDELRT: No such process
    SIOCDELRT: No such process
    SIOCDELRT: No such process
    SIOCDELRT: No such process
    SIOCDELRT: No such process
       ...done.
    
    /etc/hosts

    Code:
    127.0.0.1	localhost	linux
    #127.0.1.1	linux.WorkGroup	linux
    192.168.20.20	linux.mydomain.com linux
    192.168.20.21	virtual-ip1.mydomain.com	virtual-ip1
    192.168.20.22	virtual-ip2.mydomain.com	virtual-ip2
    192.168.20.23	virtual-ip3.mydomain.com	virtual-ip3
    192.168.20.24	virtual-ip4.mydomain.com	virtual-ip4
    192.168.20.25	virtual-ip5.mydomain.com	virtual-ip5
    
    # The following lines are desirable for IPv6 capable hosts
    ::1     ip6-localhost ip6-loopback
    fe00::0 ip6-localnet
    ff00::0 ip6-mcastprefix
    ff02::1 ip6-allnodes
    ff02::2 ip6-allrouters
    ff02::3 ip6-allhosts
    
    /etc/network/interfaces

    Code:
    # This file describes the network interfaces available on your system
    # and how to activate them. For more information, see interfaces(5).
    
    # The loopback network interface
    auto lo
    iface lo inet loopback
    
    # The primary network interface
    auto eth0
    #iface eth0 inet dhcp
    iface eth0 inet static
    	address 192.168.20.20
    	netmask 255.255.255.0
    	network 192.168.20.0
    	broadcast 192.168.20.255
    	gateway 192.168.20.10
    
    auto eth0:0
    iface eth0:0 inet static
    	address 192.168.20.21
    	netmask 255.255.255.0
    	network 192.168.20.0
    	broadcast 192.168.20.255
    	gateway 192.168.20.10
    
    auto eth0:1
    iface eth0:1 inet static
    	address 192.168.20.22
    	netmask 255.255.255.0
    	network 192.168.20.0
    	broadcast 192.168.20.255
    	gateway 192.168.20.10
    
    auto eth0:2
    iface eth0:2 inet static
    	address 192.168.20.23
    	netmask 255.255.255.0
    	network 192.168.20.0
    	broadcast 192.168.20.255
    	gateway 192.168.20.10
    
    auto eth0:3
    iface eth0:3 inet static
    	address 192.168.20.24
    	netmask 255.255.255.0
    	network 192.168.20.0
    	broadcast 192.168.20.255
    	gateway 192.168.20.10
    
    auto eth0:4
    iface eth0:4 inet static
    	address 192.168.20.25
    	netmask 255.255.255.0
    	network 192.168.20.0
    	broadcast 192.168.20.255
    	gateway 192.168.20.10
    
    ifconfig

    Code:
    eth0      Link encap:Ethernet  HWaddr 00:0C:29:35:BF:A4  
              inet addr:192.168.20.20  Bcast:192.168.20.255  Mask:255.255.255.0
              inet6 addr: fe80::20c:29ff:fe35:bfa4/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:284 errors:0 dropped:0 overruns:0 frame:0
              TX packets:325 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:252091 (246.1 KiB)  TX bytes:25954 (25.3 KiB)
              Interrupt:185 Base address:0x1400 
     
    eth0:0    Link encap:Ethernet  HWaddr 00:0C:29:35:BF:A4  
              inet addr:192.168.20.21  Bcast:192.168.20.255  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              Interrupt:185 Base address:0x1400 
     
    eth0:1    Link encap:Ethernet  HWaddr 00:0C:29:35:BF:A4  
              inet addr:192.168.20.22  Bcast:192.168.20.255  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              Interrupt:185 Base address:0x1400 
     
    eth0:2    Link encap:Ethernet  HWaddr 00:0C:29:35:BF:A4  
              inet addr:192.168.20.23  Bcast:192.168.20.255  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              Interrupt:185 Base address:0x1400 
     
    eth0:3    Link encap:Ethernet  HWaddr 00:0C:29:35:BF:A4  
              inet addr:192.168.20.24  Bcast:192.168.20.255  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              Interrupt:185 Base address:0x1400 
     
    eth0:4    Link encap:Ethernet  HWaddr 00:0C:29:35:BF:A4  
              inet addr:192.168.20.25  Bcast:192.168.20.255  Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              Interrupt:185 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:12 errors:0 dropped:0 overruns:0 frame:0
              TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0 
              RX bytes:1309 (1.2 KiB)  TX bytes:1309 (1.2 KiB)
     
    Last edited: Nov 7, 2006
  5. falko

    falko Super Moderator

    What's the output of
    Code:
    ifconfig
    ?
     
  6. domino

    domino New Member

    I edited my post. It doesn't seem to have any effect. All IP addesses work fine.
     
  7. falko

    falko Super Moderator

    Then everything's ok, I guess. :)
     

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