The embedded jars consists of a number of tld files. Some of these containt tags
like this :
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
When an application containing a single tld is deployed, all these tlds are
parsed, which fails when there is no internet connection. In regular glassifsh
files like web-jsptaglibrary_1_1.dtd are in lib/dtds/. In embedded these are not
installed on the temporary filesystem that embedded uses.