Traffic not flowing without pinging the gateway ip address
I am having a weird issue in a small ipv6 network. I have 2 routers connected directly with each other and servers on each side of both the routers, the servers are configured with static ip address with the router's interface as default gateway.
Everything works fine with one weird issue, I cannot ping server BBBB::2 from server AAAA::2 initially, but if i ping the default gateway i.e. AAAA::1 from server AAAA::2 , after that I can reacj BBBB::2.
If I keep using the servers everything works fine but If I stop all traffic for like 20-30 minutes it the traffic flow again stops and I need to ping the default gateway again to start the traffic flow.
Can anyone tell me what could be the issue here, everything is statically configured, there is no RA or DHCP involved.
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