Created attachment 583380 [details]
Building sys-apps/iproute-5.2.0 fails when linking arpd because it can't find -ldb
Created attachment 583382 [details]
Created attachment 583384 [details]
What version(s) of sys-libs/db do you have installed?
I have sys-libs/db-6.0.35-r1
I've recently faced same problem on one of my machines. It turned out that simply remerging sys-libs/db fixed the issue for me.