- RewireAllIPv6() began with `if !IPv6Enabled() { return nil }`, so in none
mode — the mode that carries an extra prefix — it did nothing at all: the
boot unit and `vps ipv6-reapply` never set net.ipv6.conf.all.forwarding,
all.proxy_ndp or <ext_if>.proxy_ndp, and without them Incus could not install
the routed NIC's proxy_ndp entry, so every create failed
- give that branch its plumbing: forwarding, kernel proxy_ndp, the NDP rules
and the whole-/64 routes
- ensure forwarding + proxy_ndp at create time, before the routed NIC exists,
so a create no longer depends on a prior install / ipv6-reapply
- a clone or launch failure now calls cleanup() and removes the partial
instance; the leftover used to hold the name, so every retry was refused with
"already exists (orphan?)"
- the installer persists the name-free sysctls (all.proxy_ndp always,
all.forwarding when vpsmgr relays container v6) and uninstall resets
all.proxy_ndp again
Co-authored-by: CommandCodeBot <noreply@commandcode.ai>
