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IPv6 link-local address
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freke
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Joined: 23 Jan 2003
Posts: 402
Location: Somewhere in Denmark

PostPosted: Thu Aug 20, 2015 6:56 pm    Post subject: IPv6 link-local address Reply with quote

Polishing my server I'm trying to get rid of the IPv6 link-local address (or do I need it for some reason?)
Code:
Eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.0.1  netmask 255.255.254.0  broadcast 10.0.1.255
        inet6 fe80::20d:b9ff:fe35:b37e  prefixlen 64  scopeid 0x20<link>
        inet6 2001:470:28:4a6::4  prefixlen 64  scopeid 0x0<global>
        ether 00:0d:b9:35:b3:7e  txqueuelen 1000  (Ethernet)


I've tried googling a bit - but not gotten much wiser tbh....

Anybody know how I can disable it?
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py-ro
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Joined: 24 Sep 2002
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Location: St. Wendel

PostPosted: Thu Aug 20, 2015 7:19 pm    Post subject: Reply with quote

You can't, you need it for some thing. One thing is it used in the Neighbour Discovery, which is the successor of ARP from IPv4.

Bye
Py
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freke
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PostPosted: Thu Aug 20, 2015 7:37 pm    Post subject: Reply with quote

py-ro wrote:
You can't, you need it for some thing. One thing is it used in the Neighbour Discovery, which is the successor of ARP from IPv4.

Bye
Py


I'll leave it be then - thanks :)
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UberLord
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Joined: 18 Sep 2003
Posts: 6737
Location: Blighty

PostPosted: Sat Aug 22, 2015 1:13 pm    Post subject: Reply with quote

You also need the link-local address to request a Router Advertisement or negotiate a DHCPv6 lease.
So yeah, kind of essential :)
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