Illegal instance declaration for `Storable HostAddress6'

[litoh]

Network/Socket/Internal.hsc:116:10:
    Illegal instance declaration for `Storable HostAddress6'
      (All instance types must be of the form (T a1 ... an)
       where a1 ... an are *distinct type variables*,
       and each type variable appears at most once in the instance head.
       Use -XFlexibleInstances if you want to disable this.)
    In the instance declaration for `Storable HostAddress6'
cabal: Error: some packages failed to install:
network-2.3.0.2 failed during the building phase. The exception was:
ExitFailure 1

cabal-install version 0.8.2

using version 1.8.0.6 of the Cabal library

The Glorious Glasgow Haskell Compilation System, version 7.1.20110223