[ipv6hackers] Question on DHCPv6 address assignment

Scott Hogg scott at hoggnet.com
Fri Jan 31 22:46:56 CET 2014

1) To my knowledge, most DHCPv6 servers hand out randomized interface 
identifiers within the scope range.
2) Hosts typically renew their lease at 50% of the lease time.  If the lease 
time is one week, then, most hosts that are joined to the network regularly 
will renew their least at 3.5 days and keep a fairly stable address.


-----Original Message----- 
From: Fernando Gont
Sent: Friday, January 31, 2014 2:00 PM
To: IPv6 Hackers Mailing List
Subject: [ipv6hackers] Question on DHCPv6 address assignment


I'm wondering about the following two aspects of different DHCPv6
implementations out there:

1) What's the pattern with which addresses are generated/assigned? Are
they sequential (fc00::1, fc00::2, etc.)?  Random? Something else?

2) What about their stability? Is there any intent/mechanism for them to
be as "stable" as possible? Or is it usual for hosts to get a new
address for each lease?

P.S.: I understand this is likely to vary from one implementation to
another... so please describe which implementation/version you're
referring to.


Best regards,
Fernando Gont
e-mail: fernando at gont.com.ar || fgont at si6networks.com
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1

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