Understanding IPv6 routes in web UI

[lleachii]

@mikma

On Ethernet interfaces the prefix size should always be 64.

(Unless you have a downstream router.)

@lleachii

I even played around with getting IPv6 to a downstream ISP-provided router. I delegated a /62 to the interface/VLAN from wan6 and enabled DHCPv6, the device received a /63 PD and assigned a /64 each to its LAN and WAN, and made a Kernel route to the /63 via the other router's WAN link local IPv6 addresd - success!

@mikma

This is an oddity with OpenWrt, and in reality it's a /64 prefix that's on-link.

The route is made in Kernel, though.