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[Openstack] live migration dedicated network issue


I am trying to set dedicated network for live migration and for that i
did following in nova.conf

My dedicated network is 172.29.0.0/24

live_migration_uri =
"qemu+ssh://nova@%s/system?no_verify=1&keyfile=/var/lib/nova/.ssh/id_rsa"
live_migration_tunnelled = False
live_migration_inbound_addr = "172.29.0.25"

When i am trying to migrate VM i am getting following error, despite
error i am able to ping remote machine and ssh also. why i am getting
this error?

2018-08-24 01:07:55.608 61304 ERROR nova.virt.libvirt.driver
[req-26561823-4ae0-43ca-b6fe-5dd9609e796b
eebe97b4bc714b8f814af8a44d08c2a4 2927a06cf30f4f7e938fdda2cc05aed2 -
default default] [instance: a61e7e6f-f819-4ddf-9314-8a142515f3d6] Live
Migration failure: unable to connect to server at '172.29.0.24:49152':
No route to host: libvirtError: unable to connect to server at
'172.29.0.24:49152': No route to host