Through autoconfig we've an IP in our /64 block: 2001:bc8:6005:5:aa1e:84ff:fef3:5d9c

Gateway is in fe80, ie in link-local unicast addressing.

Could need to enable a block for static assignment according https://www.scaleway.com/en/docs/compute/dedibox/how-to/activate-ipv6-block/

Important:

The DUID of your prefix (and each of its subnets) is like a private key and grants you access to your prefix. Keep it secret and do not share it.

Autoconfig IP isn't in our block

2001:bc8:2e84:700:: /56 should be used for WindRiver addresses.

We've a DNS delegation for they block at HE.

DUID published in Vault under ops/secrets/network/DUID/2001:bc8:2e84:700::

In NetBox, a DUID custom field has been created for objects IPAM > prefixes, so we can store those paths.

Worked before (dhclient + routes), but on boot:

• we've a correct fe80 address
• no dhclient, but /usr/local/etc/rc.d/dhclient6 start does NOT complain dhclient6_enable="YES" is missing
• when dhclient is started, our correct prefix is returned
• no static IP assignment in current state (missing from /etc/netif/igb0_ipv6)
• we can add manually IP in our prefix
• routing is missing and can't be easily figured (the expectation was dhclient would take care of that)

So, to get routing back:

• remove IPv6 from igb0 (perhaps not needed)
• ask again route advertisement ifconfig igb0 inet6 accept_rtadv (definitely needed)
• ping something to go out, at that moment the routing table (netstat -6rn) should get a default route in fe80
• add our static IP: ifconfig igb0 inet 6 add 2001:bc8:2e84:700::da7a:7001 prefixlen 56