If Linux was AGPL you would have to You wouldn't, as system interfaces are specifically excluded as an AGPL enforcement domain. But if the Linux kernel was AGP

If Linux was AGPL you would have to You wouldn't, as system interfaces are specifically excluded as an AGPL enforcement domain. But if the Linux kernel was AGPL, you would have to supply the source code to your NFS clients, since those clients would be served directly by the kernel.