Merge branch 'LTE-sidelink' of https://gitlab.eurecom.fr/oai/openairinterface5g into LTE-sidelink

remote_UE_routing.sh

 #!/bin/bash
 
+sudo iptables -t mangle -F
+sudo iptables -t nat -F
+
+# Load ue_ip module
+sudo rmmod ue_ip
+source oaienv
+cd cmake_targets/tools
+source init_nas_s1 UE
+
 #Interface configuration
 sudo ifconfig oip0 10.0.0.2
 
@@ -7,10 +16,14 @@ sudo ifconfig oip0 hw ether 00:00:00:00:00:02
 
 #Routing configuration for specific sidelink destination addresses (sidelink (10.0.0.1))
 sudo ip neigh add 10.0.0.1 lladdr 00:00:00:00:00:01 dev oip0 nud permanent
+sudo ip neigh change 10.0.0.1 lladdr 00:00:00:00:00:01 dev oip0 nud permanent
 
-#Establishment of SLRB for sidelink communication
+# Mark outgoing UNICAST traffic to UE 10.0.0.2 with the SLRB ID
 sudo iptables -A POSTROUTING  -t mangle -o oip0 -d 10.0.0.1 -j MARK --set-mark 4 
 
+# Mark outgoing MULTICAST traffic to group 224.0.0.3 with the SLRB ID
+sudo iptables -A POSTROUTING  -t mangle -o oip0 -d 224.0.0.3 -j MARK --set-mark 5
+
 # Associate destination address (e.g. 8.8.8.8) with the MAC address of the relay UE at the neighbor table
 sudo ip neigh add 8.8.8.8 lladdr 00:00:00:00:00:01 dev oip0 nud permanent