[ovirt-users] Host installation failed while creating a new host

I got the error "Host xxxx installation failed. Failed to configure management network on the host.", when creating a new host. Attached the supervdsm.log on the host. restore-net::INFO::2016-06-18 08:26:22,018::netconfpersistence::62::root::(setNetwork) Adding network ovirtmgmt({u'hostQos': {u'out': {u'ls': {u'm2': 50}}}, 'nic': u'em1', u'ipaddr': u'10.0.100.17', u'switch': u'legacy', u'mtu': 1500, u'netmask': u'255.255.255.0', u'STP': u'no', u'bridged': u'true', u'gateway': u'10.0.100.2', u'defaultRoute': True}) restore-net::DEBUG::2016-06-18 08:26:22,028::netinfo::735::root::(_get_gateway) The gateway 10.0.100.2 is duplicated for the device ovirtmgmt restore-net::INFO::2016-06-18 08:26:22,028::netconfpersistence::187::root::(_clearDisk) Clearing /var/run/vdsm/netconf/nets/ and /var/run/vdsm/netconf/bonds/ restore-net::DEBUG::2016-06-18 08:26:22,028::netconfpersistence::195::root::(_clearDisk) No existent config to clear. restore-net::INFO::2016-06-18 08:26:22,028::netconfpersistence::131::root::(save) Saved new config RunningConfig({'ovirtmgmt': {u'hostQos': {u'out': {u'ls': {u'm2': 50}}}, 'nic': u'em1', u'ipaddr': u'10.0.100.17', u'switch': u'legacy', u'mtu': 1500, u'netmask': u'255.255.255.0', u'STP': u'no', u'bridged': u'true', u'gateway': u'10.0.100.2', u'defaultRoute': True}}, {}) to /var/run/vdsm/netconf/nets/ and /var/run/vdsm/netconf/bonds/ restore-net::INFO::2016-06-18 08:26:22,029::vdsm-restore-net-config::447::root::(restore) restoration completed successfully.