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Home > Success Center > Virtualization Manager (VMAN) > Disable IPv6 on VMAN virtual appliance

Disable IPv6 on VMAN virtual appliance

Table of contents

Updated March 10, 2017

Overview

This article will provide you steps on how to disable IPv6 on VMan virtual appliance.

Note: There is no option on the VMan GUI to disable the IPv6. This needs to be done on the OS level (CentOS 5.11).

Environment

VMan 6.x and 7.0

Steps

If you can see below. The IPv6 is enabled by default on the VMAN OS:


--------------------------------------------------------------------
[root@sup-man-rlof-vman ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:15:5D:42:0D:19
          inet addr:10.203.68.209  Bcast:10.203.69.255  Mask:255.255.254.0
          inet6 addr: fe80::215:5dff:fe42:d19/64 Scope:Link   <------------------------IPv6 enabled
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2500850803 errors:0 dropped:0 overruns:0 frame:0
          TX packets:59201889 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:197173897108 (183.6 GiB)  TX bytes:39706632046 (36.9 GiB)
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host                                <------------------------IPv6 enabled
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:333210986 errors:0 dropped:0 overruns:0 frame:0
          TX packets:333210986 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:215812248147 (200.9 GiB)  TX bytes:215812248147 (200.9 GiB)

 

Disable IPv6

  1. Connect to the VMan virtual appliance via SSH and login as an admin.
  2. Change the permission to root level using the sudo su - root command.
  3. Use text editor (vi) to edit /etc/modprobe.conf and add to the end the lines below:
    alias ipv6 off
    options ipv6 disable=1
  4. Save the changes then reboot the appliance.
  5. Check if the changes took effect. Connect again to the VMan virtual appliance via SSH and do ifconfig.

 

If you notice below, the inet6 line is gone. This verifies that IPv6 is now disabled.

---------------------------------------------------------------------------------
[admin@sup-man-rlof-vman ~]$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:15:5D:42:0D:19
          inet addr:10.203.68.209  Bcast:10.203.69.255  Mask:255.255.254.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:19451 errors:0 dropped:0 overruns:0 frame:0
          TX packets:383 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1209051 (1.1 MiB)  TX bytes:58546 (57.1 KiB)
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:3588 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3588 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2826095 (2.6 MiB)  TX bytes:2826095 (2.6 MiB)

 

 

 

Last modified
16:31, 9 Mar 2017

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