Java before version 7 can't cope with DH parameters longer
than 1024 bits but Apache 2.4 bases the DH parameter length
on the certificate key length, which is 2048 bits.
http://httpd.apache.org/docs/current/ssl/ssl_faq.html#javadh
Oi0FZvAScRs1kwCm+9p3Z/pYNJomRE21Wco1tqUMoQsIasBDzKmILNMGXWO8wDuG
l3L09Dqq6lo/przbhmSSb4Xbktf2IOqHSvYHOus1p3c0+N1lIipTyi2hqe/loA==
-----END CERTIFICATE-----
+-----BEGIN DH PARAMETERS-----
+MIGHAoGBALyRheYOdJoRfRRYJSSl++1QZxQ4nSdnoVZkb3kdSBweh+XfiiLApDO5
+G+cfiNcwrKiYZBCqQDlPlBBNuY+Xn2acrH9m4g60UJxz6ONezoy2uwEHGyNCF3qf
+Q0uh8zidmjTOHlZ1phKx42W2jpcdnp8rR/F9/m2FkxgY2I4DaYSfAgEF
+-----END DH PARAMETERS-----