The code allowed for the command 'set interface unnumbered'
to be processed without specifying any parameters,
thus the set logic of the command would have been using uninitialized
variables 'unnumbered_sw_if_index' and 'inherit_from_sw_if_index'.
Change-Id: I4de14fa1096527c5c48f74304db379f9953760a8
Signed-off-by: Igor Mikhailov (imichail) <imichail@cisco.com>
ab3e42b08d