Quagga wont bind to IPv6 [::0]

Binary package hint: quagga

Quagga/BGP refuses to bind to the IPv6 address [::0] (accept-any-incoming IPv6) and insteads binds to the IPv4 address 0.0.0.0, which prevents Quagga/BGP from processing any requests from IPv6 peers. This is due to Quagga's listening code that assumes that Quagga is running on a dual/seperate stack system, unlike the single-IPv4-mapped-in-IPv6 stack present in Linux. (http://www.gossamer-threads.com/lists/quagga/users/17797). It shouldn't be too hard of a fix, we just need to change Quagga to bind on [::0] only instead of 0.0.0.0 and [::0]