ports - ignore hosts that aren't responding?

[Timothy Luoma]

I've tried to install several ports that rely on gnu.org over the past 
several days, and the first THREE attempts timeout.  Here's one 
example:

=> Attempting to fetch from http://ftp.gnu.org/gnu/coreutils/.
fetch: http://ftp.gnu.org/gnu/coreutils/coreutils-5.2.1.tar.bz2: 
Operation timed out

=> Attempting to fetch from ftp://ftp.gnu.org/gnu/coreutils/.
fetch: ftp://ftp.gnu.org/gnu/coreutils/coreutils-5.2.1.tar.bz2: 
Operation timed out

=> Attempting to fetch from http://ftp.lug.udel.edu/pub/gnu/coreutils/.
fetch: 
http://ftp.lug.udel.edu/pub/gnu/coreutils/coreutils-5.2.1.tar.bz2: 
Operation timed out

=> Attempting to fetch from http://gnu.mirror.mcgill.ca/coreutils/.

Is there a way I can tell 'make' to (at least temporarily) not even try 
to connect to the first 3?

TjL