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Tunnel interface does not apply EUI-64 IPv6 Address
Closed, ResolvedPublicBUG


When configuring an EUI64 IPv6 address at IPv6-GRE Tunnels, it is not generated and is not available at the Tunnel Interface.
The image below shows a tunnel interface configured with an IPv6-EUI address and the show interface command does not exhibit the configured IPv6 address. This IPv6 is not available in the system.


Difficulty level
Normal (likely a few hours)
VyOS 1.3-rolling-202007300117
Why the issue appeared?
Will be filled on close
Is it a breaking change?
Unspecified (possibly destroys the router)
Issue type
Bug (incorrect behavior)

Event Timeline

c-po renamed this task from IPv6-GRE does not get EUI-64 IP Address to Tunnel interface does not apply EUI-64 IPv6 Address.Aug 16 2020, 6:55 PM
c-po changed Difficulty level from Hard (possibly days) to Normal (likely a few hours).

Tunnel Interfaces also do not generate/configure a Link-Local IPv6. It looks like Tunnel interfaces do not have any MAC Address associated to it.

This comment was removed by c-po.

In VyOS 1.3-rolling-202008170118 the interfaces do not generate/get the configured IPv6-EUI Address, as in the image:

I will take at look if I can implement a short fix to generate IPv6 Link Local addresses on wireguard interfaces.

Work with latest rolling release:

356: [email protected]: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1476 qdisc noqueue state UNKNOWN group default qlen 1000
    link/gre6 2001::1 peer 2001::2
    inet6 2002::fdc9:56ff:fedb:3f36/64 scope global
       valid_lft forever preferred_lft forever
    inet6 fe80::fd05:d4ff:fe9e:1dec/64 scope link
       valid_lft forever preferred_lft forever
erkin set Issue type to Bug (incorrect behavior).Aug 29 2021, 1:26 PM
erkin removed a subscriber: Active contributors.