The environment variable PACKAGEROOT specifies an alternate location
for pkg_add to fetch from. The fetch URL is built using this environ-
ment variable and the automatic directory logic that pkg_add uses when
the -r option is invoked. An example setting would be
"ftp://ftp3.FreeBSD.org".
The environment variable PACKAGESITE specifies an alternate location
for pkg_add to fetch from. This variable subverts the automatic direc-
tory logic that pkg_add uses when the -r option is invoked. Thus it
should be a complete URL to the remote package file(s).