This is a ticket for re@/so@ to track the merges want to do an EN for r280930. Details: https://reviews.freebsd.org/D2165 Assessment from Garrett: The buggy computation and 45 MiB limit have been in every release of FreeBSD that has this kernel RPC implementation, but they only really matter on 64-bit architectures (and obviously only for NFS servers).
According to the review, a change has been committed to resolve this.