Lighttpd

Hello,
We are using lighttpd 1.4.35 in an embedded device (cannot use the most recent one due to library issues). We activate the ssl engine : it works fine but although the client propose TLS1.0 to TLS1.2 in the hello message (chrome or IE), we only get an TLS 1.0 connexion. I try to use openssl 1.0.2n and openssl 1.0.1h but still get TLS1.0, never 1.1 or 1.2. What could be the issue ?
It seems that TLS1.1 and TLS1.2 are disable (?!) (openssl s_client -connect oursite:443 -tls1_2 failed (but succeeded with a website like www.google.com). This "openssl" is the same that the one used to build lighttpd).

Thanks

Our conf file :
server.document-root = "/srv/www/"

server.port = 443
ssl.engine = "enable"
ssl.pemfile = "/opt/AlpesTechno/srv.pem"
ssl.use-sslv3 = "disable"
ssl.honor-cipher-order = "enable"
ssl.cipher-list = "EECDH+AESGCM:EDH+AESGCM:AES128+EECDH:AES128+EDH"

server.username = "ulighttpd"
server.groupname = "lighttpd"
server.errorlog = "/opt/AlpesTechno/lght.log"

mimetype.assign = (
".html" => "text/html; charset=utf-8",
".txt" => "text/plain",
".css" => "text/css",
".jpg" => "image/jpeg",
".png" => "image/png",
".js" => "application/x-javascript; charset=utf-8",
".pdf" => "application/pdf"
)

static-file.exclude-extensions = ( ".fcgi", ".php", ".rb", "~", ".inc" )
index-file.names = ( "index.php","index.html" )

$HTTP["host"] == "www2.example.org" {
server.document-root = "/srv/www/"
}
$HTTP["url"] =~ "oscillo\.png$"{
setenv.add-request-header=("Cache-Control"=>"private,no-cache,must-revalidate,no-store")
}

server.modules += ( "mod_fastcgi","mod_alias","mod_setenv" )

fastcgi.server = ( ".php" =>
(( "socket" => "/tmp/php-fastcgi.socket",
"bin-path" => "/usr/php/bin/arm-php-cgi -c /usr/php/lib/php.ini",
"max-procs" => 2,
"bin-environment" => (
"PHP_FCGI_CHILDREN" => "2",
"PHP_FCGI_MAX_REQUESTS" => "500")
))
)