iplink: do not require assigning negative ifindex at link creation
Since commit 3c682146, iplink requires assigning negative ifindex (-1) to the kernel when creating interface without specifying index. v2: checking whether index is -1, suggested by Cong Wang. Cc: Cong Wang <cwang@twopensource.com> Signed-off-by:Atzm Watanabe <atzm@stratosphere.co.jp> Acked-by:
Cong Wang <cwang@twopensource.com>
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