dhclient 6

root@nb-chaas:~# rm /var/lib/dhcp/dhclient6.leases
rm: cannot remove '/var/lib/dhcp/dhclient6.leases': No such file or directory
root@nb-chaas:~# dhclient -6 -d wlan0
Internet Systems Consortium DHCP Client 4.3.5
Copyright 2004-2016 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on Socket/wlan0
Sending on   Socket/wlan0
Created duid "\000\001\000\001 G\000\253\204:K\223\241@".
PRC: Soliciting for leases (INIT).
XMT: Forming Solicit, 0 ms elapsed.
XMT:  X-- IA_NA 4b:93:a1:40
XMT:  | X-- Request renew in  +3600
XMT:  | X-- Request rebind in +5400
XMT: Solicit on wlan0, interval 1070ms.
RCV: Advertise message on wlan0 from fe80::20d:b9ff:fe44:f2f5.
RCV:  X-- IA_NA 4b:93:a1:40
RCV:  | X-- starts 1488208940
RCV:  | X-- t1 - renew  +0
RCV:  | X-- t2 - rebind +0
RCV:  | X-- [Options]
RCV:  | | X-- IAADDR fd01:ad34:db87:cafe::42b8
RCV:  | | | X-- Preferred lifetime 4500.
RCV:  | | | X-- Max lifetime 7200.
RCV:  X-- Server ID: 00:01:00:01:20:46:f2:9e:00:0d:b9:44:f2:f5
RCV:  Advertisement recorded.
PRC: Selecting best advertised lease.
PRC: Considering best lease.
PRC:  X-- Initial candidate 00:01:00:01:20:46:f2:9e:00:0d:b9:44:f2:f5 (s: 10104, p: 0).
XMT: Forming Request, 0 ms elapsed.
XMT:  X-- IA_NA 4b:93:a1:40
XMT:  | X-- Requested renew  +3600
XMT:  | X-- Requested rebind +5400
XMT:  | | X-- IAADDR fd01:ad34:db87:cafe::42b8
XMT:  | | | X-- Preferred lifetime +7200
XMT:  | | | X-- Max lifetime +7500
XMT:  V IA_NA appended.
XMT: Request on wlan0, interval 950ms.
RCV: Reply message on wlan0 from fe80::20d:b9ff:fe44:f2f5.
RCV:  X-- IA_NA 4b:93:a1:40
RCV:  | X-- starts 1488208941
RCV:  | X-- t1 - renew  +0
RCV:  | X-- t2 - rebind +0
RCV:  | X-- [Options]
RCV:  | | X-- IAADDR fd01:ad34:db87:cafe::42b8
RCV:  | | | X-- Preferred lifetime 4500.
RCV:  | | | X-- Max lifetime 7200.
RCV:  X-- Server ID: 00:01:00:01:20:46:f2:9e:00:0d:b9:44:f2:f5
PRC: Bound to lease 00:01:00:01:20:46:f2:9e:00:0d:b9:44:f2:f5.
PRC: Renewal event scheduled in 3600 seconds, to run for 1800 seconds.
PRC: Depreference scheduled in 4500 seconds.
PRC: Expiration scheduled in 7200 seconds.