Comment 1 for bug 617978

I'm having the same problem, right now I fix this with:

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auto eth1
iface eth1 inet6 static
        address 2a00:0f10:010a:0003::2
        netmask 64
        gateway 2a00:0f10:010a:0003::1
        post-up ip -f inet6 addr add 2a00:0f10:010a:0003:7ab9::80 dev eth1
        pre-down ip -f inet6 addr del 2a00:0f10:010a:0003:7ab9::80 dev eth1
        post-up ip -f inet6 addr add 2a00:0f10:010a:0003:7ab9::81 dev eth1
        pre-down ip -f inet6 addr del 2a00:0f10:010a:0003:7ab9::81 dev eth1
        post-up ip -f inet6 addr add 2a00:0f10:010a:0003:7ab9::82 dev eth1
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But that's not really usefull.