Hi:
test it but it seems can not work. I need to bond ip address, or better urbackup can keep tracking the current ip addresses, not just adding it to broadcast list but forget deleting. for example to reproduce the behavior:
let BROADCAST_INTERFACES=“br0”
[root@backup]# ip addr add 1.1.1.1/24 dev br0
[root@backup]# sleep 60
[root@backup]# ip addr del 1.1.1.1/24 dev br0
[root@backup]# tail -1 /var/log/urbackup.log
2019-11-07 08:55:28: ERROR: Sending broadcast failed!