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Ios , 15.1(4)Cisco 1900-universal k9-mz.SPA.151-4.M4.bin And Ios ,isr4300-universalk9.03.16.05.S.155-ext.SPA.binI cannot type ipv6 nd prefix. It is unrecognized command in ios 15.1 And it is appear as invalid input in 16.05
