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Old 03-29-2014, 03:59 AM   #1
amit.kanade1983
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Registered: May 2012
Location: India
Distribution: CentOS,RedHat
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IPv6 configuration issue on Centos 6.2


IPv6
Hi, I am trying to set ipv6 on 5 VMs in our production environment. The problem is I can see IPv6 being set on 1 server by running ifconfig. But on other servers even though I restart network service I cant see IPv6 address being set, in fact I see some other IPv6 address. All are running Centos 6.2.

Output of "ip -6 addr" on 1st server.

[root@TSTLBS01 network-scripts]# ip -6 addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
inet6 2405:200:a10:f080:10:135:128:127/64 scope global
valid_lft forever preferred_lft forever
inet6 2405:200:a10:f080:215:5dff:fe19:4d0e/64 scope global dynamic
valid_lft 2591852sec preferred_lft 604652sec
inet6 fe80::215:5dff:fe19:4d0e/64 scope link
valid_lft forever preferred_lft forever


---------------------------------------------------

On 2nd server.

[root@TSTLBS02 network-scripts]# ip -6 addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
inet6 2405:200:a10:f080:215:5dff:fe19:4d0f/64 scope global dynamic
valid_lft 2591938sec preferred_lft 604738sec
inet6 fe80::215:5dff:fe19:4d0f/64 scope link
valid_lft forever preferred_lft forever
-----------------------------------------------------If you compare above outputs you can see on 1st, the IP being set

inet6 2405:200:a10:f080:10:135:128:127/64 scope global

but, on 2nd one I cant see any such line in the output.


I want to know what step am I missing. I have checked ifcfg files and enabled ipv6 networking in network file.
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Old 03-30-2014, 07:52 AM   #2
Ser Olmy
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So, one server has one static address and one autoconfig/dynamic global address, while the other only gets the autoconfig address. That points to a configuration issue.

There's probably some subtle mistake or typo in the config file on the second server. I suggest you post the files from both servers.
 
Old 03-31-2014, 01:02 AM   #3
amit.kanade1983
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Registered: May 2012
Location: India
Distribution: CentOS,RedHat
Posts: 41

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Yes.it was a typo error. In the config file I had IPV6_ADDRESS instead of IPV6ADDRESS. Thanks ser olmy.
 
  


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