hey,
Why? What problem are you solving by changing the current behavior?
We propose to decouple DHCP from RA, view them as two different autoconfiguration protocols. Today you can't deploy DHCP without RA and this forces you to support/secure two protocols that mostly overlap.
Personally I think it's a huge mistake for an implementor to have the kernel process RAs, all this control plane should be done in userspace, not in the kernel.
Kernel, userspace, doesn't matter but we propose not to make it complicated and prefer one over another. Let RA and DHCP work independently and configure interfaces/routing tables. Let kernel sort out which address/route to use based on weights or even ECMP over both RA and DHCP defaultroutes if one chooses to do so.
-- tarko
