VRRP turns always to MASTER after configuration change

RouterOS General
1

I have two CCR1072 with a configuration like this one:

MK1                                              MK2
bonding-+                                 +--bonding
        |                                 |
        + vlan1----------+----------vlan1 +
        |                |                |
        |          vrrp1 +                |
        |     (prio 200)   (prio 150)     |
        |                                 |
        + vlan2----------+----------vlan2 +
                          |                
                    vrrp2 +                
              (prio 200)   (prio 150)



MK1 is the master on vrrp’s and, inside each vrrp, these are the IPs:

vrrp1 (vrid 10) 1.1.1.1/24
1.1.1.2/24
1.1.1.3/24

vrrp2 (vrid 11) 2.1.1.1/24
2.1.1.2/32
2.1.1.3/32

When I add a new IP address to the vrrp1, for example 1.1.1.4/24, both routers swich to BACKUP state and turn into MASTER, and then, the second one return to their preferred state, BACKUP,
these are the logs:

MK1:

MK2:

This produces issues in the network. Are there a way to update the vrrp without this behaviour? Why it happens?

An an other question related to the mask… why it’s needed the use of /32 on the vip? it works too with /24, but I don’t know if I’m hidding the problem related.

Thanks,