DH Params from Firefox not compatible with old OpenSSL versions (CPAN RT#130116)

--- lib/AnyEvent/TLS.pm
+++ lib/AnyEvent/TLS.pm
@@ -480,7 +480,7 @@ of course.
 =item dh => $string
 
 Specify the Diffie-Hellman parameters in PEM format directly as a string
-(see C<dh_file>), the default is C<ffdhe3072> unless C<dh_file> was
+(see C<dh_file>), the default is C<schmorp2048> unless C<dh_file> was
 specified.
 
 AnyEvent::TLS supports supports a number of precomputed DH parameters,
@@ -650,7 +650,7 @@ sub new {
       $dh_bio = Net::SSLeay::BIO_new_file ($dh_file, "r")
          or croak "$dh_file: failed to open DH parameter file: $!";
    } else {
-      $arg{dh} = "ffdhe3072" unless exists $arg{dh};
+      $arg{dh} = "schmorp2048" unless exists $arg{dh};
 
       if (defined $arg{dh}) {
          $dh_file = "dh string";