Function createVethPair

tailnet/test/integration/network.go:687–704

createVethPair creates a veth pair with the given names.

(parentVethName, peerVethName string, options ...linkOption)

// createVethPair creates a veth pair with the given names.
func createVethPair(parentVethName, peerVethName string, options ...linkOption) error {
	linkAttrs := netlink.NewLinkAttrs()
	linkAttrs.Name = parentVethName
	for _, option := range options {
		linkAttrs = option(linkAttrs)
	}
	veth := &netlink.Veth{
		LinkAttrs: linkAttrs,
		PeerName:  peerVethName,
	}

	err := netlink.LinkAdd(veth)
	if err != nil {
		return xerrors.Errorf("LinkAdd(type: veth, name: %q, peerName: %q): %w", parentVethName, peerVethName, err)
	}

	return nil
}

// setVethNetNS moves the veth interface to the specified network namespace.
func setVethNetNS(vethName string, netNSFd int) error {