IPV6 question

Paolo Galtieri pgaltieri at gmail.com
Sat Oct 29 02:37:12 UTC 2011


According to most recent RFCs IPv6 addresses starting with 0xFD are
considered unique local addresses.   This is more or less equivalent to the
IPv4 private addresses.

I have the following IPv6 address configured on eth0

fd00:1111::41/32

When I run ifconfig eth0 I get:

eth0      Link encap:Ethernet  HWaddr 00:18:F8:0E:76:F2
          inet addr:10.0.0.65  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: fe80::218:f8ff:fe0e:76f2/64 Scope:Link
          inet6 addr: fd00:1111::41/32 Scope:Global
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:15616420 errors:0 dropped:0 overruns:0 frame:0
          TX packets:11913944 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:13426298081 (12.5 GiB)  TX bytes:1913387990 (1.7 GiB)
          Interrupt:16 Base address:0xe700

Notice that the entry for fd00:1111::41/32 shows its scope as Global.  I
would have expected something else.  Am I just misunderstanding the concept
of local vs global?

Thanks,
Paolo
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