iproute2 does not build. Line 64 of the ebuild does a sed statement that replaces -ldb with -ldb-1, this should be -ldb1 since that is what sys-libs/db-1.85-r1.ebuild installs it as.
yeah, i had libdb-1 on my system for some reason which is why i used that fixed in portage earlier today when seemant pointed it out