HASH Carp Persistence

But if this setting is disabled, will the user face any impact, since a RST packet is not sent?

if reset on timeout is disabled, tcp reset won't be sent but connection entry is still removed from connection table. so, subsequent packet will be reset anyway (since no entry in connection table) unless loose initiation is enabled.

Enabling the Loose Initiation option allows the system to initialize a connection when it receives any TCP packet, rather than requiring a SYN packet for connection initiation.

sol7595: Overview of IP forwarding virtual servers