ERL + ERPro + Interface tunnel GRE and OSPFv3

Dear all,

I am trying to configure a network of ER (Pro and Lite) to get access thru GRE tunnel some OSPFv3 to redistribute :

• Default route
• Loopback interfaces
• Local lan network and static IPv6 routes.

Here is some of my configuration on the master router (Edge Router Pro with internet connection with BGP to get IPv4 + IPv6 feed).

interfaces {
	tunnel tun1 {        
	 address 192.0.2.2/30
         address dead:beef:ffff:ffff::3/127
         description "GRE to remote"
         encapsulation gre
         ipv6 {
             ospfv3 {
                 cost 10
             }
         }
         local-ip 193.xxx.xxx.2
         mtu 1476
         remote-ip 82.xxx.xxx.111
         ttl 255
    	 }
   	 loopback lo {
         address 193.yyy.yyy.1/32
         address dead:beef::1/128
         ipv6 {
             ospfv3 {
                 cost 1000
                 passive
             }
         }
     }
}
protocols {
     ospfv3 {
         area 0.0.0.0 {
             interface lo
             interface tun1
         }
         default-information {
             originate {
                 always
             }
         }
         parameters {
             router-id 193.189.147.1
         }
         redistribute {
             connected {
             }
             static {
             }
         }
}	

On the remote end I have :

interfaces {
     loopback lo {
         address dead:beef::35/128
         ipv6 {
             ospfv3 {
                 cost 1000
                 passive
             }
         }
     tunnel tun0 {
         address 192.0.2.1/30
         address dead:beef:ffff:ffff::2/127
         description "GRE Tunnel to central router"
         encapsulation gre
         ipv6 {
             dup-addr-detect-transmits 1
             ospfv3 {
                 cost 10
             }
         }
         local-ip 82.xx.xx.111
         mtu 1476
         remote-ip 193.xxx.xxx.2
         ttl 255
	}
}
 protocols {
     ospfv3 {
         area 0.0.0.0 {
             interface lo
             interface tun0
         }
         parameters {
             router-id 2.2.2.2
         }
         redistribute {
             connected {
             }
             static {
             }
         }
     }
 }

Seems that ospf neighbors doesn't seems to going up. I am a bit puzzled because the MTU are the same.

The only "strange" thing is :

$ show ipv6 ospfv3 neighbor 
OSPFv3 Process (*null*)
Neighbor ID     Pri   State           Dead Time   Interface  Instance ID

Maybe because quagga ospf6d doesn't have a number ?

Any clues of ideas to fix that ?

Regards,