Created attachment 199877 [details]
Quick fix for the issue.
With RSS enabled, the kernel build fails due to the ixl driver.
Created attachment 199878 [details]
Git diff for file /usr/src/sys/dev/ixl/if_iavf.c
The fix is in HEAD; I need to MFC it back into stable/12.
(In reply to Eric Joyner from comment #2)
Ok; it's in stable/12 now. You should try it again and report back if it fixed the build for you.
Works. Thank you.