GRE tunnel passing 802.1q tagged VLANs on 871 and 851

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Need to setup a temp (30 days) until new circuit is installed GRE tunnel passing 802.1q tagged vlans. Tried following vlan routing and bridging on a router using the irb from: but not able to pass tagged vlans over the GRE tunnel.

I have the tunnel up and can pass non tagged traffic across OK, but when I try to add tagged traffic no go.

871 <-> GRE tunnel <-> 851

My problem may be the 851?

871 running C870-ADVIPSERVICESK9-M), Version 12.4(15)T7

851 running C850-ADVSECURITYK9-M), Version 12.4(4)T8

Attached the sho config for Local and remote 800's



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