Question

adding ip address to same interface fedora 11

Asked by: howart

When I add a second ip address to an interface as suggested on the internet, so the ip address will be there right after boot time, I get the following with Fedora 11:
see code

it shouldbe see code part II

I use the method suggested on
http://blog.taragana.com/index.php/archive/how-to-add-multiple-ip-addresses-on-linux-fedora-core-fedora/

eth0      Link encap:Ethernet  HWaddr 00:0A:5E:63:04:12  
          inet addr:192.168.1.12  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::20a:5eff:fe63:412/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:704 errors:0 dropped:0 overruns:1 frame:0
          TX packets:119 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:71463 (69.7 KiB)  TX bytes:15320 (14.9 KiB)
          Interrupt:16 Base address:0x4f80 
 
eth1      Link encap:Ethernet  HWaddr 00:21:70:2E:CC:5F  
          inet addr:192.168.1.12  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::221:70ff:fe2e:cc5f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:385 errors:0 dropped:0 overruns:0 frame:0
          TX packets:38 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:45749 (44.6 KiB)  TX bytes:5525 (5.3 KiB)
          Memory:fe9e0000-fea00000 
 
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:20 errors:0 dropped:0 overruns:0 frame:0
          TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1280 (1.2 KiB)  TX bytes:1280 (1.2 KiB)
 
 
it should be:
 
eth0      Link encap:Ethernet  HWaddr 00:0A:5E:63:04:12  
          inet addr:192.168.1.18  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::20a:5eff:fe63:412/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6383 errors:0 dropped:0 overruns:1 frame:0
          TX packets:553 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:660083 (644.6 KiB)  TX bytes:72387 (70.6 KiB)
          Interrupt:16 Base address:0x4f80 
 
eth0:0    Link encap:Ethernet  HWaddr 00:0A:5E:63:04:12  
          inet addr:192.168.1.12  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:16 Base address:0x4f80 
 
eth1      Link encap:Ethernet  HWaddr 00:21:70:2E:CC:5F  
          inet addr:192.168.1.19  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::221:70ff:fe2e:cc5f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4512 errors:0 dropped:0 overruns:0 frame:0
          TX packets:526 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:536479 (523.9 KiB)  TX bytes:70212 (68.5 KiB)
          Memory:fe9e0000-fea00000 
 
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:26 errors:0 dropped:0 overruns:0 frame:0
          TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:2108 (2.0 KiB)  TX bytes:2108 (2.0 KiB)

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Asked On: 2009-10-29 at 06:04:13ID24854398
Tags: linux fedora 11 network
Topics: Fedora Linux
,; Red Hat Linux
,; Linux Networking
Participating Experts: 2
Points: 500
Comments: 14

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Answers

by: howartPosted on 2009-10-29 at 06:05:27ID: 25693143

What goes wrong?

How can I make the system boot to the desired situation?

by: mwecomputersPosted on 2009-10-29 at 06:21:59ID: 25693310

Post a copy of both your '/etc/sysconfig/network-scripts/ifcfg-eth0' & '/etc/sysconfig/network-scripts/ifcfg-eth0:0' files.

by: howartPosted on 2009-10-29 at 06:37:44ID: 25693481

# Networking Interface
DEVICE=eth0
HWADDR=00:0A:5E:63:04:12
IPADDR=192.168.1.18
BOOTPROTO=none
NETMASK=255.255.255.0
TYPE=Ethernet
#GATEWAY=192.168.1.240
NM_CONTROLLED=yes
IPV6INIT=no
ONBOOT=yes
USERCTL=no
PREFIX=24
NAME="System eth0"
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03
DNS2=192.168.1.15
DNS1=192.168.1.9
#GATEWAY=192.168.1.240

and:

# Networking Interface
DEVICE=eth0:0
IPADDR=192.168.1.12
BOOTPROTO=static
NETMASK=255.255.255.0
ONBOOT=yes
NAME="System eth0:0"

by: mwecomputersPosted on 2009-10-29 at 07:08:01ID: 25693792

DNS Servers (192.168.1.15, 192.168.1.9) should be found in the /etc/resolv.conf file, thus not hard coded into the network configuration.

NetworkManager (NM_CONTROLLED) interfaces can cause havoc on ethernet aliased addresses.

The if-eth0 and if-eth0:0 files should look like this:

# File: ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
NM_CONTROLLED=no
HWADDR=00:0A:5E:63:04:12
IPADDR=192.168.1.18
NETMASK=255.255.255.0
BROADCAST=192.168.0.255
NETWORK=192.168.0.0
GATEWAY=192.168.1.240
TYPE=Ethernet
USERCTL=no
IPV6INIT=no
PEERDNS=yes
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03
NAME="System eth0"
 
# File: ifcfg-eth0:0
DEVICE=eth0:0
ONBOOT=yes
BOOTPROTO=static
NM_CONTROLLED=no
IPADDR=192.168.1.12
NETMASK=255.255.255.0
NAME="System eth0:0"

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by: howartPosted on 2009-10-29 at 07:38:59ID: 25694142

i don't see were ifcfg-eth0:0 is set in /etc/init.d/network

How will eth0:0 get booted?

interfaces=$(ls ifcfg* | \
            LANG=C sed -e "$__sed_discard_ignored_files" \
                       -e '/\(ifcfg-lo\|:\|ifcfg-.*-range\)/d' \
                       -e '/ifcfg-[A-Za-z0-9\._-]\+$/ { s/^ifcfg-//g;s/[0-9]/ &/}' | \
            LANG=C sort -k 1,1 -k 2n | \
            LANG=C sed 's/ //')
 
 
# ifcfg-eth0:0 will not be in this list
# How will ethx:x intface be booted?
 
 
for i in $interfaces; do
                unset DEVICE TYPE SLAVE
                eval $(LANG=C fgrep "DEVICE=" ifcfg-$i)
                eval $(LANG=C fgrep "TYPE=" ifcfg-$i)
                eval $(LANG=C fgrep "SLAVE=" ifcfg-$i)
 
                if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi
 
                if [ "${DEVICE##cipcb}" != "$DEVICE" ] ; then
                        vpninterfaces="$vpninterfaces $i"
                        continue
                fi
                if [ "$TYPE" = "xDSL" ]; then
                        xdslinterfaces="$xdslinterfaces $i"
                        continue
                fi
 
                if [ "$TYPE" = "Bridge" ]; then
                        bridgeinterfaces="$bridgeinterfaces $i"
                        continue
                fi
                if [ "$TYPE" = "IPSEC" ]; then
                        vpninterfaces="$vpninterfaces $i"
                        continue
                fi
 
                if [ "${DEVICE%%.*}" != "$DEVICE"  -o  "${DEVICE##vlan}" != "$DEVICE" ] ; then
                        vlaninterfaces="$vlaninterfaces $i"
                        continue
                fi
 
                if [ "$SLAVE" = "yes" ]; then
                        continue
                fi
 
                if LANG=C egrep -L "^ONBOOT=['\"]?[Nn][Oo]['\"]?" ifcfg-$i > /dev/null ; then
                        # this loads the module, to preserve ordering
                        is_available $i
                        continue
                fi
                # If we're in confirmation mode, get user confirmation.
                if [ -f /var/run/confirm ]; then
                        confirm $i
                        test $? = 1 && continue
                fi
                action $"Bringing up interface $i: " ./ifup $i boot
                rc=$((rc+$?))
        done

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by: howartPosted on 2009-10-29 at 08:29:27ID: 25694784

Ok I have disabled NM_CONTROLLED
When I do a restart of the network with service network restart

I get:
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists

by: mwecomputersPosted on 2009-10-29 at 09:26:00ID: 25695354

The network script will list each ifcfg-* file from the interfaces, and try to start each one.

---

For the 'RTNETLINK answers: File exists' message, try this from the command line:

ifdown eth0:0; ifdown eth0; ifup eth0

by: mwecomputersPosted on 2009-10-29 at 09:39:41ID: 25695514

I just noticed something else as well -- post the output for '/etc/sysconfig/network-scripts/ifcfg-eth1' as well.

by: howartPosted on 2009-10-30 at 01:26:11ID: 25700929

I don't know how it works with nm-controlled but as soon as I set this to no in the config file
a popup shows up from the panel that the neetwork is disconnect
.
So there must be a deamon which monitors the network settings.

Do you know which deamon this is?

by: howartPosted on 2009-10-30 at 01:28:28ID: 25700938

Comment to the network start-up script:

With
interfaces=$(ls ifcfg* | \
LANG=C sed -e "$__sed_discard_ignored_files" \
-e '/$ifcfg-lo\|:\|ifcfg-.*-range$/d' \
-e '/ifcfg-[A-Za-z0-9\._-]\+$/ { s/^ifcfg-//g;s/[0-9]/ &/}' | \
LANG=C sort -k 1,1 -k 2n | \
LANG=C sed 's/ //')

ifcfg-lo and ifcfg-ethx:x are excluded from the filter list and not started.

In Fedora 11 things seem to be different then that we were used to with Linux.

by: mwecomputersPosted on 2009-10-30 at 07:16:03ID: 25703137

NM_CONTROLLED is handled by the NetworkManager.

Having it set to 'NM_CONTROLLED=no' disallows the NetworkManager from handling these interfaces.

I recommend disabling the NetworkManager completely:
- chkconfig NetworkManager off
- /etc/init.d/NetworkManager stop

---

Through some quick trial and error, I utilized the 'system-config-network' command and then used the GUI interface to setup the Ethernet/IP alias. Once it creates the IP alias, you then active it and then save it. It will most likely prompt you to restart the network services -- '/etc/init.d/network restart'

by: it4sohoPosted on 2009-10-30 at 07:24:10ID: 25703221

Correction:
They are not started at the same time and in the same location as "standard" eth devices (and with good reason - the hardware interface does NOT need to be initialized & drivers do NOT need to be loaded).

I suggest you test your theory that your ifcfg-eth0:0 is correct and that it's just not running at boot-time:
- After a fresh boot, check your ifconfig -a output to see if device eth0:0 is there.
- Assuming not, run the command "ifup eth0:0" and re-check.
- If the "ifup" command did NOT create & configure eth0:0 then you KNOW that your file has an error (perhaps a permissions problem, or a spelling issue -- either way, you'll know it's in that file.
- If the command DOES create the interface, rather than attempting to fix the system startup files for RedHat, just add the ifup command to your /etc/rc.d/rc.local file -- it's the REASON for the local file to begin with (To make local modifications not "covered" by the system startup scripts), and will run at the end of your system startup via the S99local entry in /etc/rc?.d

Good Luck!

Dan
IT4SOHO

by: it4sohoPosted on 2009-10-30 at 07:57:23ID: 25703591

OH... and an explanation of what happens when you disable network management and when you restart the network you get a "file exists" error:
- When you reconfigure the network without the network management and perform the "stop" part of a restart, it doesn't think network management needs to be stopped because it is not configured! Thus, when you attempt to restart, since it didn't stop correctly, it won't start correctly.

Try stopping the network services, editing the configuration files to remove network management, then restarting the network services (or, reconfigure & reboot instead of just restarting the network).

Just my thoughts...

Dan
IT4SOHO

by: howartPosted on 2009-11-03 at 07:26:50ID: 31647478

I stopped with the multiple ip addresses on one interface.
I gave it the one we need for smtp traffic.

But thanks for your support.
Networkmanaged

20120131-EE-VQP-002

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adding ip address to same interface fedora 11

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