diff --git a/zfs-backup-mm b/zfs-backup-mm
index 44ef60f..84f9072 100755
--- a/zfs-backup-mm
+++ b/zfs-backup-mm
@@ -26,7 +26,7 @@ fi
 backup_block () {
 
 source_zfs_snapshots=$(zfs list -t snapshot)
-backups_server_zfs_snapshots=$(ssh -p $backup_server_port $backup_server zfs list -t snapshot)
+backups_server_zfs_snapshots=$(ssh -$backup_server_ipv -p $backup_server_port $backup_server zfs list -t snapshot)
 
 for dataset in $source_datasets;
 do
@@ -38,10 +38,10 @@ backup_snap=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_datase
 if [ -z "$backup_snap" ]
 then
 	echo "Snapshot on backup server not found, sending "$dataset"@"$source_snap" to server "$backup_server" "$backup_server_dataset"/"$dataset_clean""
-	zfs send -c "$dataset"@"$source_snap" | pv | ssh "$backup_server" -p "$backup_server_port" zfs recv "$backup_server_dataset"/"$dataset_clean" && echo "Send OK"
+	zfs send -c "$dataset"@"$source_snap" | pv | ssh -$backup_server_ipv "$backup_server" -p "$backup_server_port" zfs recv "$backup_server_dataset"/"$dataset_clean" && echo "Send OK"
 else
 	echo "Snapshot on backup server found, sending incremental from "$dataset"@"$backup_snap" to "$dataset"@"$source_snap" to server "$backup_server" "$backup_server_dataset"/"$dataset_clean""
-	zfs send -ci "$dataset"@"$backup_snap" "$dataset"@"$source_snap" | pv | ssh "$backup_server" -p "$backup_server_port" zfs recv "$backup_server_dataset"/"$dataset_clean" -F && echo "Send OK"
+	zfs send -ci "$dataset"@"$backup_snap" "$dataset"@"$source_snap" | pv | ssh -$backup_server_ipv "$backup_server" -p "$backup_server_port" zfs recv "$backup_server_dataset"/"$dataset_clean" -F && echo "Send OK"
 fi
 done
 del_snaps_block
@@ -57,7 +57,7 @@ snaps_to_delete=$(echo "$backups_server_zfs_snapshots" | grep "$backup_server_da
 for snap in $snaps_to_delete
 do
 	echo "Deleting snapshot "$snap" on "$backup_server""
-	ssh "$backup_server" -p "$backup_server_port" zfs destroy "$snap"
+	ssh -$backup_server_ipv "$backup_server" -p "$backup_server_port" zfs destroy "$snap"
 done
 
 done