[j-nsp] ipInIp interface got the same IPV6 address on both end?

[zeng watchthinker]

I made 2 ipip interface in 2 logical routers. While I find the same IPV6 
address is created on these two ipip interface.

Seems there is some problem?

[edit logical-routers]
juniper at p3# show r1 interfaces 
ip-0/0/0 {
    unit 0 {
        tunnel {
            source 10.0.4.5;
            destination 10.0.4.6;
        }
        family inet {
            address 1.1.1.1/30;
        }
        family inet6 {
            address 2:10::/64 {
                eui-64;
            }
        }
    }
}

juniper at p3# show r2 interfaces 
ip-0/0/0 {
    unit 1 {
        tunnel {
            source 10.0.4.6;
            destination 10.0.4.5;
        }
        family inet {
            address 1.1.1.2/30;
        }
        family inet6 {
            address 2:10::/64 {
                eui-64;
            }
        }
    }

juniper at p3# run show interfaces terse 
Interface               Admin Link Proto Local                 Remote
gr-0/0/0                up    up  
ip-0/0/0                up    up  
ip-0/0/0.0              up    up   inet  1.1.1.1/30      
                                   inet6 2:10::2a0:a5ff:fe12:6920/64
                                         fe80::2a0:a5ff:fe12:6920/64
ip-0/0/0.1              up    up   inet  1.1.1.2/30      
                                   inet6 2:10::2a0:a5ff:fe12:6920/64
                                         fe80::2a0:a5ff:fe12:6920/64

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