no internet browsing via pfsense ha

[Snailkhan]

hi
i have two pfsense in HA. wan has its carp ip from wan subnet lan has carp ip from its lan subnet. sync via different interface and dedicated subnet. carp is behaving normal . when one node is down other takes over.

a test client can ping the carp lan ip which is set as its default gateway. but internet is not working via this carp ip. ping trace faails.

when i assign one node lan ip to client as gateway browsing works fine. i tried second node lan ip as gateway on client and browsing is working fine. Its only that browsing doesn't works if i assign carp ip of lan subnet as gateway.

for outbound nat i am using advanced manual outbound nat.

on pfsense primary master i canot ping 4.2.2.2 if i select carp wan ip as source.

on lan interface its allow all all rule

client can ping the carp lan ip

IP addresses and subnet is correct on each interface and the Carp IP.
I do not undersatand what i am missing ?