the zaptel ebuild should use linux-mod_src_install instead of the zaptel makefile. this will help to ensure compatibility with future kernel versions. sys-block/open-iscsi can be used as an example. the ebuild should not install /lib/modules/*/modules.*. (probably created by the kbuild call) instead it should only generate those files during post_install by calling the eclass linux-mod_pkg_postinst function.
*** Bug 212139 has been marked as a duplicate of this bug. ***
(In reply to comment #0) > the zaptel ebuild should use linux-mod_src_install I don't know if it's coded correctly but it builds fine on my system: http://bugs.gentoo.org/show_bug.cgi?id=204057
net-misc/zaptel was removed from the portage tree on 2011-02-27. please upgrade to net-misc/dahdi.