SetUpVethWithName returns one veth with down

[terassyi]

When I use containernetworking/plugins v1.1.1 SetUpVethWithName returns one veth interface with down.
Therefore, I have to set up the link after I get it.

For example, SetUpVethWithName returns contVeth with down when calling like below.
hostVeth, contVeth, err := ip.SetUpVethWithName( ... )

In PR #687, I found that the code to set up the veth is deleted.

https://github.com/containernetworking/plugins/pull/687/files#diff-a3e0f4cdf9821c455178c4ea6aeba5f7a8faf8121022a740dd65b32bace17fac

Is this an intended behavior?

Thank you in advance.

[MikeZappa87]

Hello, what is your network configuration? I can look into this?

[dcbw]

@terassyi yes, that must now be done by caller code. This was done to ensure that any required IP addressing is done before the interface is brought up, since when it's up it will begin responding to ARP requests, and may send a gratuitous ARP to announce its IP/MAC mapping. But if the IP address is assigned later, after it's UP, it won't do that.

[terassyi]

Thank you for your comment.

I understand that I have to set links up after I get them.