Thanks for reporting that. That's most likely due to an incompatibility between NetBSD and POSIX; see <http://gnats.netbsd.org/43154>. To test my theory, please try the following two patches, which work around that incompatibility:
http://lists.gnu.org/archive/html/bug-tar/2010-11/msg00094.html http://lists.gnu.org/archive/html/bug-tar/2010-11/msg00100.html If they fix the problem, the bug should be resolved in the next release of GNU tar.
