dockbook.xsl -- can't load when building port

[Gary Aitken]

My apologies if this is a duplicate;
tried to send earlier without this addr subscribed.

Trying to rebuild ports after pkg delete -a

Lots of stuff fails with things like:

/usr/local/bin/xmlto man dbus-monitor.1.xml
compilation error: file /tmp/xmlto-xsl0Tylm9 line 4 element import
xsl:import: unable to load
"http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"
I/O Error: Attempt to load network entity
"http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"

I have turned off language options in most packages,
but have left docs included in all of them

executing the above xmlto cmd generates the error outside of all build
scripts;
I can go to the above url and load it fine.

what's the magic I need?

9.2-RELEASE, amd64

Thanks,

Gary