Created attachment 1165131 [details]
Whole log

Description of problem:
----------------------
The compilation script fails to load network entity and concludes that there's an I/O error.
Manual attempt is successful.

Version-Release number of selected component (if applicable):
------------------------------------------------------------
Libvirt 1.3.5 from git sources

Steps to Reproduce:
------------------
	echo --------
	echo Cleaning
	echo --------
	cd git-libvirt
	git reset --hard
	git clean -fxd :/
	git fetch --progress --prune origin
	git checkout 1.3.5

	echo -----------
	echo Configuring
	echo -----------
	export CLEAN_SUBMODULE=1
	./autogen.sh
	./configure	--with-openssl \
			--with-systemd-daemon \
			--with-numactl \
			--with-numad \
			--with-default-editor=gedit \
			--without-xen --without-xen-inotify --without-xenapi --without-libxl \
		     	--prefix=/usr --sysconfdir=/etc --localstatedir=/var --libdir=/usr/lib

	echo ------------------------------------------------
	echo "Modifying src/util/virnetdev.c:"
	echo "99 #define VIR_DAD_WAIT_TIMEOUT 60 /* seconds */"
	echo "Not sure whether it is still necessary or not"
        echo "Cf. https://bugzilla.redhat.com/show_bug.cgi?id=1275468"
	echo --------------------------------------------------------
	sed -i 's|VIR_DAD_WAIT_TIMEOUT 20|VIR_DAD_WAIT_TIMEOUT 60|g' src/util/virnetdev.c

	echo ---------
	echo Compiling
	echo ---------
	make

Actual results:
--------------
...
Generating drvvmware.html.tmp
I/O error : Attempt to load network entity http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd
drvvmware.html.in:2: warning: failed to load external entity "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
                                                                               ^
I/O error : Attempt to load network entity http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd
../docs/sitemap.html.in:2: warning: failed to load external entity "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
                                                                               ^
missing XHTML1 DTD
Generating governance.html.tmp
I/O error : Attempt to load network entity http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd
governance.html.in:2: warning: failed to load external entity "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
                                                                               ^
I/O error : Attempt to load network entity http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd
../docs/sitemap.html.in:2: warning: failed to load external entity "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"

...

Manual attempt:
--------------
wget http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd
--2016-06-06 10:50:30--  http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd
Resolving www.w3.org (www.w3.org)... 128.30.52.100
Connecting to www.w3.org (www.w3.org)|128.30.52.100|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/xml-dtd]
Saving to: ‘xhtml1-strict.dtd’

xhtml1-strict.dtd                               [ <=>                                                                                     ]  24.88K   165KB/s    in 0.2s    

2016-06-06 10:50:46 (165 KB/s) - ‘xhtml1-strict.dtd’ saved [25472]

It does take a little time to start, so it seems there should be a longer or configurable timeout.

Additional info:
---------------
Ubuntu 16.04 4.4.0-22