Do not disable ipv6 in mgm container

scripts/start_services.sh

@@ -96,7 +96,9 @@ docker exec -i eos-mq /eos_mq_setup.sh
 
 # MGM server creation
 echo -e "\n\n*** MGM server creation"
-docker run --privileged -dit -h eos-mgm1.eoscluster.cern.ch --name eos-mgm1 --net=eoscluster.cern.ch --net-alias=eos-mgm1 --ulimit "core=-1" --security-opt "seccomp=unconfined" $image
+
+docker run --privileged -dit -h eos-mgm1.eoscluster.cern.ch --name eos-mgm1 --net=eoscluster.cern.ch --net-alias=eos-mgm1 --ulimit "core=-1" --security-opt "seccomp=unconfined" --sysctl net.ipv6.conf.all.disable_ipv6=0 $image
+
 
 if [[ $with_qdb == 1 ]]; then
 echo -e "\n\n*** QuarkDB server creation and setup"