mobula broken?

[b04902036]

After rebooting the hosts that deployed mobula, the system seems broken (cannot ping each other with the interface provided by mobula...
nslab need help!

UPDATE:
in /opt/mobula/log/openvswitch/openvswitch there is

2020-04-07T09:40:41.148Z|00005|reconnect|INFO|unix:/opt/mobula/run/openvswitch/db.sock: connecting...
2020-04-07T09:40:41.148Z|00006|reconnect|INFO|unix:/opt/mobula/run/openvswitch/db.sock: connected
2020-04-07T09:40:41.151Z|00007|dpdk|INFO|DPDK Disabled - Use other_config:dpdk-init to enable
2020-04-07T09:40:41.159Z|00008|dpif_netlink|INFO|The kernel module does not support meters.
2020-04-07T09:40:41.164Z|00009|ofproto_dpif|INFO|system@ovs-system: Datapath supports recirculation
2020-04-07T09:40:41.165Z|00010|ofproto_dpif|INFO|system@ovs-system: VLAN header stack length probed as 2
2020-04-07T09:40:41.165Z|00011|ofproto_dpif|INFO|system@ovs-system: MPLS label stack length probed as 1
2020-04-07T09:40:41.165Z|00012|ofproto_dpif|INFO|system@ovs-system: Datapath supports truncate action
2020-04-07T09:40:41.165Z|00013|ofproto_dpif|INFO|system@ovs-system: Datapath supports unique flow ids
2020-04-07T09:40:41.165Z|00014|ofproto_dpif|INFO|system@ovs-system: Datapath does not support clone action
2020-04-07T09:40:41.165Z|00015|ofproto_dpif|INFO|system@ovs-system: Max sample nesting level probed as 10
2020-04-07T09:40:41.165Z|00016|ofproto_dpif|INFO|system@ovs-system: Datapath supports eventmask in conntrack action
2020-04-07T09:40:41.165Z|00017|ofproto_dpif|INFO|system@ovs-system: Datapath supports ct_clear action
2020-04-07T09:40:41.165Z|00018|ofproto_dpif|INFO|system@ovs-system: Max dp_hash algorithm probed to be 0
2020-04-07T09:40:41.165Z|00019|ofproto_dpif|INFO|system@ovs-system: Datapath supports ct_state
2020-04-07T09:40:41.165Z|00020|ofproto_dpif|INFO|system@ovs-system: Datapath supports ct_zone
2020-04-07T09:40:41.165Z|00021|ofproto_dpif|INFO|system@ovs-system: Datapath supports ct_mark
2020-04-07T09:40:41.165Z|00022|ofproto_dpif|INFO|system@ovs-system: Datapath supports ct_label
2020-04-07T09:40:41.165Z|00023|ofproto_dpif|INFO|system@ovs-system: Datapath supports ct_state_nat
2020-04-07T09:40:41.165Z|00024|ofproto_dpif|INFO|system@ovs-system: Datapath supports ct_orig_tuple
2020-04-07T09:40:41.165Z|00025|ofproto_dpif|INFO|system@ovs-system: Datapath supports ct_orig_tuple6
2020-04-07T09:40:41.286Z|00026|dpif_netlink|INFO|dpif_netlink_meter_transact OVS_METER_CMD_SET failed
2020-04-07T09:40:41.286Z|00027|dpif_netlink|INFO|dpif_netlink_meter_transact OVS_METER_CMD_SET failed
2020-04-07T09:40:41.286Z|00028|dpif_netlink|INFO|dpif_netlink_meter_transact get failed
2020-04-07T09:40:41.286Z|00029|dpif_netlink|INFO|The kernel module has a broken meter implementation.
2020-04-07T09:40:41.296Z|00030|bridge|INFO|bridge ovsbr-mobula: added interface geneve-mobula-3 on port 3
2020-04-07T09:40:41.300Z|00031|bridge|INFO|bridge ovsbr-mobula: added interface ovsbr-mobula on port 65534
2020-04-07T09:40:41.300Z|00032|bridge|INFO|bridge ovsbr-mobula: added interface geneve-mobula-6 on port 4
2020-04-07T09:40:41.300Z|00033|bridge|INFO|bridge ovsbr-mobula: added interface geneve-mobula-2 on port 2
2020-04-07T09:40:41.301Z|00034|bridge|INFO|bridge ovsbr-mobula: added interface mo-fac-ovs on port 1
2020-04-07T09:40:41.301Z|00035|bridge|INFO|bridge ovsbr-mobula: using datapath ID 0000fa50b8b71a45
2020-04-07T09:40:41.301Z|00036|connmgr|INFO|ovsbr-mobula: added service controller "punix:/opt/mobula/run/openvswitch/ovsbr-mobula.mgmt"
2020-04-07T09:40:41.398Z|00037|ofproto_dpif_xlate|INFO|/proc/sys/net/core/netdev_max_backlog: open failed (No such file or directory)
2020-04-07T09:40:41.402Z|00038|bridge|INFO|ovs-vswitchd (Open vSwitch) 2.11.0
2020-04-07T09:40:51.031Z|00039|memory|INFO|299892 kB peak resident set size after 10.3 seconds
2020-04-07T09:40:51.032Z|00040|memory|INFO|handlers:23 ports:5 revalidators:9 rules:5

Is this a bug or just a feature disabled?