All other vrrp instances and vrrp devices are seen up on keepalived .

Eg:
2023-11-06T20:16:47.131102882(0.000680087) NETLINK Indication NEWLINK, len 1324, flags , seq 0, pid 0| fam 0:route, ifname vrrp3.4, flags 1002:broadcast,multicast, change ffffffff
2023-11-06T20:16:47.131774258(0.000423241) NETLINK Indication NEWLINK, len 1352, flags , seq 0, pid 0| fam 0:route, ifname vrrp3.4, flags 1002:broadcast,multicast, change 0
2023-11-06T20:16:47.132978262(0.000765018) NETLINK Indication NEWLINK, len 1352, flags , seq 0, pid 0| fam 0:route, ifname vrrp3.4, flags 11043:broadcast,multicast,up,running,lowerup, change 1
2023-11-06T20:16:47.258600274(0.000248887) NETLINK Indication NEWLINK, len 1352, flags , seq 0, pid 0| fam 0:route, ifname vrrp3.4, flags 11043:broadcast,multicast,up,running,lowerup, change 0
root@ASM2_VRRP_ROUTER:/var/log#

grep -r vrrp3.4 keepalived_vrrp.log
Mon Nov 6 20:16:47 2023: (VI_4_704_v704): Success creating VMAC interface vrrp3.4
Mon Nov 6 20:16:47 2023: send_vrrp_state_change_to_vrrpd system cmd successfull exec dcli vrrpd show slave-alarm VI_4_704_v704 vrrp3.4 2 v704
Mon Nov 6 20:16:50 2023: Sending gratuitous ARP on vrrp3.4 for 10.174.1.10
Mon Nov 6 20:16:50 2023: (VI_4_704_v704) Sending/queueing gratuitous ARPs on vrrp3.4 for 10.174.1.10

from keepalived.

Could solve this by setting the rcv buffer size in config file as mentioned in keepalived man page

The following options are only needed for large configurations, where either

       # keepalived creates a large number of interface, or the system has a large
       # number of interface. These options only need using if
       # "Netlink: Receive buffer overrun" messages are seen in the system logs.
       # If the buffer size needed exceeds the value in [/proc/sys/net/core/rmem_max](file://proc/sys/net/core/rmem_max)
       #  the corresponding force option will need to be set.
       # --
       # Set netlink receive buffer size. This is useful for
       # very large configurations where a large number of interfaces exist, and
       # the initial read of the interfaces on the system causes a netlink buffer
       # overrun.
       vrrp_netlink_cmd_rcv_bufs BYTES
       vrrp_netlink_cmd_rcv_bufs_force <BOOL>
       vrrp_netlink_monitor_rcv_bufs BYTES
       vrrp_netlink_monitor_rcv_bufs_force <BOOL>

from keepalived.

Changed the value in config file for following variables
vrrp_netlink_cmd_rcv_bufs BYTES
vrrp_netlink_monitor_rcv_bufs BYTES

from keepalived.