libICE 1.0.7 upgrade yields attempt to load network entity error

[Troy]

I'm trying to portupgrade libICE and receiving the following error. I 
checked my firewall logs and there is no log of a denial.

Any ideas?

===>  Building for libICE-1.0.7,1
make  all-recursive
Making all in doc
   GEN    ICElib.html
xmlto: /usr/ports/x11/libICE/work/libICE-1.0.7/doc/ICElib.xml does not 
validate (status 3)
xmlto: Fix document syntax or use --skip-validation option
I/O error : Attempt to load network entity 
http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
/usr/ports/x11/libICE/work/libICE-1.0.7/doc/ICElib.xml:3: warning: 
failed to load external entity 
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"
                    
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
                                                                               ^
/usr/ports/x11/libICE/work/libICE-1.0.7/doc/ICElib.xml:4160: parser 
error : Entity 'dagger' not defined
messages) is implementation-dependent.†
                                               ^
I/O error : Attempt to load network entity 
http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
warning: failed to load external entity 
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"
validity error : Could not load the external subset 
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"
Document /usr/ports/x11/libICE/work/libICE-1.0.7/doc/ICElib.xml does not 
validate
*** Error code 13

Stop in /usr/ports/x11/libICE/work/libICE-1.0.7/doc.
*** Error code 1

Stop in /usr/ports/x11/libICE/work/libICE-1.0.7.
*** Error code 1

Stop in /usr/ports/x11/libICE/work/libICE-1.0.7.
*** Error code 1

Stop in /usr/ports/x11/libICE.
Exit 1