diff --git a/README.md b/README.md
index 5390f74..b27afe7 100644
--- a/README.md
+++ b/README.md
@@ -366,6 +366,25 @@ sudo chown root powercap
 sudo chmod u+s powercap
 ```
 
+### Grid5000
+
+```bash
+ssh lyon.g5k
+oarsub -q default -l host=2,walltime=2 -I
+# Check the name of the other node in https://intranet.grid5000.fr/oar/Lyon/drawgantt-svg/
+# Let's call them p1 and p2
+ping p2
+# Note p2 addr to exp.py
+pip3 install fabric
+python exp.py make g5k -c
+python exp.py send g5k
+
+# Notes
+scp /lib/x86_64-linux-gnu/libssl.so.3.6 lyon.g5k:~/
+scp /lib/x86_64-linux-gnu/libcrypto.so.3.6 lyon.g5k:~/
+LD_PRELOAD="/home/pengelib/tlsbench/libssl.so.3.6 /home/pengelib/tlsbench/libcrypto.so.3.6" ./netreplay --help
+```
+
 ## Problems
 
 ### Youtube
diff --git a/exp.py b/exp.py
index 0e10a34..c7aab73 100644
--- a/exp.py
+++ b/exp.py
@@ -194,7 +194,7 @@ CONFIGS = {
 			"server",
 		],
 		"records": [
-			{ "filename": "wikipedia", "repeat": 500 },
+			{ "filename": "wikipedia", "repeat": 2000 },
 		],
 		"repodir": "/home/tuxmain/reps/tlsbench",
 		"expdir": "/dev/shm/exp",
@@ -240,6 +240,37 @@ CONFIGS = {
 		"p3_port_plain": 8080,
 		"p3_port_tls": 8443,
 	},
+	"g5k": {
+		"experiments": [
+			"impl-cipher-ver",
+			"impl-cert-ver",
+			"impl-kex-ver",
+			"zrtt",
+		],
+		"setups": [
+			"none",
+			"client",
+			"server",
+		],
+		"records": [
+			{ "filename": "wikipedia", "repeat": 400 },
+		],
+		"repodir": "/home/pengelib/tlsbench",
+		"expdir": "/dev/shm/exp",
+		"log_backup_dir": "/home/pengelib",
+		"p2_hostname": "nova-6",
+		"p2_addr": "172.16.52.6",
+		"p2_ssh": "pengelib@nova-6",
+		"p2_psw": None,
+		"p2_repodir": "/home/pengelib/tlsbench",
+		"wattmeter": False,
+		"perf": False,
+		"rapl": False,
+		"p3_suffix": "",
+		"p3_port_plain": 8080,
+		"p3_port_tls": 8443,
+		"idle": "idle - - - - - - - 600.000194311142 0.0 1822 6541 1.3880000000000052 304283035 -",#TODO
+	},
 }
 
 # Wildcard subdomains are used only for certificates.
@@ -423,8 +454,8 @@ def alg_filter(kex, cert, cipher, impl):
 		return False
 	if kex == "MLKEM768" and impl == "graviola":
 		return False
-	#if cipher == "ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,ECDHE_RSA_WITH_AES_256_GCM_SHA384" and impl == "openssl":
-	#	return False
+	if cipher == "ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,ECDHE_RSA_WITH_AES_256_GCM_SHA384" and impl == "openssl":
+		return False
 	return True
 
 DOMAINS = []
diff --git a/makecerts.py b/makecerts.py
new file mode 100644
index 0000000..4c48743
--- /dev/null
+++ b/makecerts.py
@@ -0,0 +1,13 @@
+# Get certificates from domains and make a similar chain.
+
+import OpenSSL
+import ssl
+
+def get_server_cert(domain, port=443):
+	cert_pem = ssl.get_server_certificate((domain, port))
+	cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM, cert_pem)
+	for i in range(cert.get_extension_count()):
+		ext = cert.get_extension(i)
+		ext_name = ext.get_short_name()
+		if ext_name == "":
+	return cert
diff --git a/plots.py b/plots.py
index 64cd9eb..732d8cf 100644
--- a/plots.py
+++ b/plots.py
@@ -341,13 +341,19 @@ def cmp_versions(logs, exps, criteria, objs):
 			val12 = float(log12[COL[obj]]) - idle_val[obj] * float(log12["time"])
 			val13 = float(log13[COL[obj]]) - idle_val[obj] * float(log13["time"])
 			# Difference relative to the mean of the two values
-			diff_rel = abs(val12 - val13) / ((val12 + val13) / 2)
+			try:
+				diff_rel = abs(val12 - val13) / ((val12 + val13) / 2)
+			except ZeroDivisionError:
+				continue
 			diff_rel_max[obj] = max(diff_rel_max[obj], diff_rel)
 			diff_rel_sum[obj] += diff_rel
 			diff_rel_num[obj] += 1
-	diff_rel_avg = {obj:diff_rel_sum[obj]/diff_rel_num[obj] for obj in objs}
 	print("Diff rel max: ", diff_rel_max)
-	print("Diff rel avg: ", diff_rel_avg)
+	try:
+		diff_rel_avg = {obj:diff_rel_sum[obj]/diff_rel_num[obj] for obj in objs}
+		print("Diff rel avg: ", diff_rel_avg)
+	except ZeroDivisionError:
+		pass
 
 def getargv(arg:str, default="", n:int=1, args:list=sys.argv):
 	if arg in args and len(args) > args.index(arg)+n: