I was recently working in the area, and ypbind is unmaintained, so I bumped it to 1.31. I couldn't test on all arches so some keywords have been dropped. Please do your tests and add ~arch keywords for net-nds/ypbind-1.31. Thanks!
Why did you dropped the keyword for a bump from 1.19 to 1.31 ? You know you should drop keywords for major bumps only ?
After discussion I think dropping these keywords was a mistake.
Fixed.