Feature request: client bind address for replication

Hi

would it be possible to consider a new parameter for replication: doveadm_local_ip which allows the source ip address to be set when connection to a remote dovecot for replication?

It could be useful when the network interface has multiple ips and a specific one is used for mail services. See attached proposal. I tested against 2.2.36 only. It applies correctly against 2.3.4 with a warning,.

John