If we have both ipv4 and ipv6 as global ip address on interface eth0, and with
renewal time
set to MAX (in this case DHCP server sending 0 for both T1 and T2 ).
RCV: | | | X-- Preferred lifetime 8640000.
RCV: | | | X-- Max lifetime 17280000.
Now if we change the date to 100 days, and do a restart of networking service,
we can see ipv6 global address has got deprecated.
root@ipv6vm4:/var/lib/dhcp# date --set "2024/02/10"
Sat Feb 10 00:00:00 UTC 2024
root@ipv6vm4:/var/lib/dhcp# systemctl restart networking.service
root@ipv6vm4:/var/lib/dhcp# ip a show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group
default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group
default qlen 1000
link/ether 60:45:bd:a7:35:11 brd ff:ff:ff:ff:ff:ff
inet 172.21.0.7/24 brd 172.21.0.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 ace:cab:deca:1234::7/128 scope global deprecated
valid_lft forever preferred_lft 0sec
inet6 fe80::6245:bdff:fea7:3511/64 scope link
valid_lft forever preferred_lft forever
By looking at the journal log, I can see following the address is depreferred.
Please let me know, if you need any other info.
OS version Debian 10 available in Azure market place. Test was done using a
Azure VM.
> -----Original Message-----
> From: Bastian Blank <bastian.bl...@credativ.de>
> Sent: Wednesday, November 2, 2022 6:28 PM
> To: 1022...@bugs.debian.org; 1022969-submit...@bugs.debian.org
> Subject: [EXTERNAL] Bug#1022969: isc-dhcp-client: dhcp6 client failing to
> renew
> the IPv6 address upon T1 expiry.
>
> [You don't often get email from bastian.bl...@credativ.de. Learn why this is
> important at https://aka.ms/LearnAboutSenderIdentification ]
>
> Control: tags -1 moreinfo
>
> Hi souradeep
>
> Please provide us with a bit more information:
> - What is the environment you are running in?
> - How to actually test this problem?
> - What does the log show?
> - Is the current stable Debian affected?
>
> Regards,
> Bastian
>
> --
> Bastian Blank
> Berater
> Telefon: +49 2166 9901-194
> E-Mail: bastian.bl...@credativ.de
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