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Maniphest T5464

ipv6: add support for per-interface dad (duplicate address detection) setting
Closed, ResolvedPublicFEATURE REQUEST
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Description

47: eth0.5@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master red state UP group default qlen 1000
    link/ether 00:00:00:00:07:ec brd ff:ff:ff:ff:ff:ff
    inet 192.0.2.121/28 brd 192.0.2.127 scope global eth0.5
       valid_lft forever preferred_lft forever
    inet6 2001:db8:200:f0::114/64 scope global dadfailed tentative
       valid_lft forever preferred_lft forever
    inet6 fe80::0:0:fe53:7ec/64 scope link
       valid_lft forever preferred_lft forever

IPv6 unicast address shows dadfailed

From Kernel docs:

accept_dad - INTEGER
    Whether to accept DAD (Duplicate Address Detection).
        0: Disable DAD
        1: Enable DAD (default)
        2: Enable DAD, and disable IPv6 operation if MAC-based duplicate
            link-local address has been found.

https://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt

Details

Difficulty level
Unknown (require assessment)
Version
-
Why the issue appeared?
Will be filled on close
Is it a breaking change?
Unspecified (possibly destroys the router)
Issue type
Unspecified (please specify)

Event Timeline

c-po created this task.Aug 11 2023, 6:15 PM
c-po claimed this task.Aug 11 2023, 6:18 PM
c-po updated the task description. (Show Details)
c-po moved this task from Need Triage to In Progress on the VyOS 1.4 Sagitta board.Aug 11 2023, 7:08 PM
c-po closed this task as Resolved.Aug 11 2023, 9:01 PM
c-po triaged this task as Low priority.