=> Bootstrap dependency digest>=20010302: found digest-20111104
=> Bootstrap dependency fetch-[0-9]*: found fetch-1.7
=> Fetching ntop-4.1.0.tar.gz
=> Total size: 39118983 bytes
fetch: http://downloads.sourceforge.net/sourceforge/ntop/ntop-4.1.0.tar.gz: Unknown resolver error
fetch: Unable to fetch expected file ntop-4.1.0.tar.gz
fetch: ftp://ftp.fi.NetBSD.org/pub/NetBSD/packages/distfiles/ntop-4.1.0.tar.gz: Unknown resolver error
fetch: Unable to fetch expected file ntop-4.1.0.tar.gz
fetch: ftp://ftp.NetBSD.org/pub/pkgsrc/distfiles/ntop-4.1.0.tar.gz: Unknown resolver error
fetch: Unable to fetch expected file ntop-4.1.0.tar.gz
fetch: http://ftp.NetBSD.org/pub/pkgsrc/distfiles/ntop-4.1.0.tar.gz: Unknown resolver error
fetch: Unable to fetch expected file ntop-4.1.0.tar.gz
fetch: ftp://ftp.FreeBSD.org/pub/FreeBSD/distfiles/ntop-4.1.0.tar.gz: Unknown resolver error
fetch: Unable to fetch expected file ntop-4.1.0.tar.gz
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/net/ntop