Try to ignore my last email (below). I don't know why I thought the NIC based IP had changed. Confused by all the octets I guess. Greg On Tue, Oct 11, 2016 at 5:05 PM, Greg Freemyer <greg.freemyer@gmail.com> wrote:
On Sat, Sep 10, 2016 at 11:08 AM, Greg Freemyer <greg.freemyer@gmail.com> wrote:
eth0 Link encap:Ethernet HWaddr 30:5A:3A:54:0D:E1 inet addr:192.168.1.13 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: 2601:c0:8105:82f0:3de5:c309:46c3:20c3/64 Scope:Global inet6 addr: 2601:c0:8105:82f0:325a:3aff:fe54:de1/64 Scope:Global inet6 addr: fe80::325a:3aff:fe54:de1/64 Scope:Link
Right, so your /64 prefix is 2601:c0:8105:82f0 -
2601:c0:8105:82f0:3de5:c309:46c3:20c3 - random address, for privacy reasons. 2601:c0:8105:82f0:325a:3aff:fe54:de1 - address derived from the interface MAC address.
Great
So, I haven't done anything with IPv6 in a month, but I thought I would see how things look now:
~> /sbin/ifconfig eth0 Link encap:Ethernet HWaddr 30:5A:3A:54:0D:E1 inet addr:192.168.1.13 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: 2601:c0:8105:82f0:dc12:1b54:f78c:771b/64 Scope:Global inet6 addr: 2601:c0:8105:82f0:325a:3aff:fe54:de1/64 Scope:Global inet6 addr: fe80::325a:3aff:fe54:de1/64 Scope:Link inet6 addr: 2601:c0:8105:82f0:9d4e:b509:cc85:9129/64 Scope:Global inet6 addr: 2601:c0:8105:82f0:3457:ddc2:f1ca:27ac/64 Scope:Global inet6 addr: 2601:c0:8105:82f0:e563:7d8a:d099:5fa0/64 Scope:Global inet6 addr: 2601:c0:8105:82f0:e145:4681:48ee:de0d/64 Scope:Global inet6 addr: 2601:c0:8105:82f0:550f:8f7a:f464:3d3a/64 Scope:Global
I assume 6 random IP addresses and one derived from the MAC. This is the same machine as above (a month ago). How do I know which IP was derived from the MAC.
Why did it change from a month ago? I assumed my NIC derived IP would be effectively static?
- I'm at my office. - No physical movement of the computer / router, and the ISP has not changed. - I doubt the router has even been re-booted in the last month.
btw: This server may have 2 MACs. If so, I don't think the cat5 cable has been moved. No wireless in use on it.
Does the shear number of those imply I'm using IPv6 for some of the outbound connections?
Looks like I'm (transparently) using IPv6 to connect to google:
~> netstat -an|grep 2601 tcp 0 0 2601:c0:8105:82f0:44992 2607:f8b0:4002:c06::443 ESTABLISHED tcp 1 78 2601:c0:8105:82f0:53892 2607:f8b0:4002:c06::443 CLOSING tcp 1 78 2601:c0:8105:82f0:34698 2607:f8b0:4002:c06::443 CLOSING tcp 0 0 2601:c0:8105:82f0:39676 2607:f8b0:4002:c06::443 ESTABLISHED udp 0 0 2601:c0:8105:82f0:e:123 :::* udp 0 0 2601:c0:8105:82f0:9:123 :::* udp 0 0 2601:c0:8105:82f0:e:123 :::* udp 0 0 2601:c0:8105:82f0:3:123 :::* udp 0 0 2601:c0:8105:82f0:5:123 :::* udp 0 0 2601:c0:8105:82f0:3:123 :::* udp 0 0 2601:c0:8105:82f0:d:123 :::*
Thanks Greg -- Greg Freemyer Are you confused as Hillary & Trump are decimated by October surprises (I call it God's work) Evan McMullin is surging. Utah looks like the first state to go his way. Don't forget, if you live in a state where you can't vote for McMullin: A vote for Trump is a vote for McMullin so get out and vote Vote Evan McMullin for President
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