Matching QinQ on XR and Cisco Switch?

Hi, I'm working on this task that I need to ping/match traffic to XR-Subinterface then passing thru switch with qinq enabled interface.

Simple Topology:

XR(Sub-Interface.200) ---> Cisco Switch ---> Router(Sub-Int.100) .

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Target Ping from XR to Router:

XR Router Config

interface g1/1.200

vrf test

ipv4 address 192.168.1.1 255.255.255.0

encapsulation dot1q 200 second-dot1q 100 <-- I'm matching this double tag.

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Switch Config

switchport access vlan 200

switchport mode dot1q-tunnel

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Router Config

interface g0/0.100

ipv4 address 192.168.1.2 255.255.255.0

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Issue: I'm able to resolve mac address on both routers but I'cant ping. Mtu support jumbo frame and no filtering applied.

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Thanks