I want to test IPV6 connectivity on another Router OS7 Device. I can ping to internet from the router. I configure 2406:xxx::1/64 to ethernet1 and 2406:xxx::2/64 to a laptop. When I try to traceroute to Internet, it doesn't go beyond 2406:xxx::1. Please help.

Is the default IPv6 firewall blocking it?

if using ppp then you maybe need to "interface/pppoe-client/set add-default-route=no ..."

I configure 2406:xxx::1/64 to ethernet1 and 2406:xxx::2/64 to a laptop. When I try to traceroute to Internet, it doesn't go beyond 2406:xxx::1. Please help.

How are things connected together as ether1 is usually the WAN connection?

if using ppp then you maybe need to "interface/pppoe-client/set add-default-route=no ..."

Unlikely. add-default-route=yes is OK on point-to-point connections such as PPPoE, the usual misconfiguration is to also enable add-default-route in the IPv6 DHCP client.

Thanks for the quick response. I am trying to connect laptop directly to Mikrotik ethernet port, not PPPoE.

if using ppp then you maybe need to "interface/pppoe-client/set add-default-route=no ..."

Unlikely. add-default-route=yes is OK on point-to-point connections such as PPPoE, the usual misconfiguration is to also enable add-default-route in the IPv6 DHCP client.

you're right, i pasted the wrong path.

Please post a /export and a brief description of the network (what is the next router and how does it assign IPv6 addresses)