[CentOS] About IPv6 Link-Local Address(CentOS5)

Hello

Because I did not send , and then retransmitted.

I am using the CentOS5.7.
In a state where the link down, I did a ping to the IPv4 and IPv6.
IPv4 succeeds in ping. but, IPv6 is ping fails.
Once confirmed by ifconfig, it did not have a Link-Local Address.
At link down, Is the Link-Local Address not set?
Leave the link down, Is there a way to avoid this?

# ethtool eth1
Settings for eth1:
〜
        Link detected: no

# ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 08:00:27:83:74:54
          inet addr:192.168.11.8  Bcast:192.168.11.255  Mask:255.255.255.0
          inet6 addr: 2000:8000:12:6:192:168:11:8/64 Scope:Global
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:786 errors:0 dropped:0 overruns:0 frame:0
          TX packets:289 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:81093 (79.1 KiB)  TX bytes:46507 (45.4 KiB)

# ping 192.168.11.8
PING 192.168.11.8 (192.168.11.8) 56(84) bytes of data.
64 bytes from 192.168.11.8: icmp_seq=1 ttl=64 time=0.033 ms
64 bytes from 192.168.11.8: icmp_seq=2 ttl=64 time=0.019 ms
〜

# ping6 2000:8000:12:6:192:168:11:8
PING 2000:8000:12:6:192:168:11:8(2000:8000:12:6:192:168:11:8) 56 data bytes


Thanks!

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