Yes, seeing this too on 15.10 since around the first week of March, as
best I can tell, but irrespective of Suspend.
It looks like dhclient thinks/is told the new lease is 'depreferred' and
therefore quits, and the dhclient process is terminated, but the address
remains on the interface until the valid-lifetime expires.
Mar 22 16:06:02 hephaestion NetworkManager[1468]: <info> Activation (wlp3s0)
Beginning DHCPv6 transaction (timeout in 45 seconds)
Mar 22 16:06:02 hephaestion NetworkManager[1468]: <info> dhclient started with
pid 19221
Mar 22 16:06:03 hephaestion dhclient: XMT: Confirm on wlp3s0, interval 950ms.
Mar 22 16:06:03 hephaestion dhclient: RCV: Reply message on wlp3s0 from
fe80::ee43:f6ff:fe46:c080.
Mar 22 16:06:03 hephaestion dhclient: message status code Success.
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> valid_lft 86400
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> preferred_lft 86400
Mar 22 16:06:03 hephaestion dhclient: PRC: Rebinding lease on wlp3s0.
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> address
2a02:8011:2007::2
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> nameserver
'2a02:8010:1:0:212:23:3:100'
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> (wlp3s0): DHCPv6
state changed unknown -> bound
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> Policy set
'wireless.lan.iam.tj' (wlp3s0) as default for IPv6 routing and DNS.
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> Writing DNS
information to /sbin/resolvconf
Mar 22 16:06:03 hephaestion dnsmasq[2433]: setting upstream servers from DBus
Mar 22 16:06:03 hephaestion dnsmasq[2433]: using nameserver
2a02:8010:1:0:212:23:3:100#53
Mar 22 16:06:03 hephaestion dnsmasq[2433]: using nameserver 10.254.1.254#53
Mar 22 16:06:03 hephaestion nm-dispatcher: Dispatching action 'dhcp6-change'
for wlp3s0
Mar 22 16:06:03 hephaestion dhclient: PRC: Address 2a02:8011:2007::2
depreferred.
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> (wlp3s0): DHCPv6
state changed bound -> unknown
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> (wlp3s0): DHCPv6
state changed unknown -> expire
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> (wlp3s0): canceled
DHCP transaction, DHCP client pid 19221
Mar 22 16:06:03 hephaestion NetworkManager[1468]: <info> (wlp3s0): DHCPv6
state changed expire -> done
$ ip -6 addr show dev wlp3s0
3: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 2a02:8011:2007::2/128 scope global dynamic
valid_lft 82942sec preferred_lft 82942sec
inet6 fe80::21f:3bff:febd:7485/64 scope link
valid_lft forever preferred_lft forever
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https://bugs.launchpad.net/bugs/1533631
Title:
Failed to renew DHCPv6 lease after suspend
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