func InterfaceDown(name string) error {
iface, err := net.InterfaceByName(name)
if err != nil {
return err
}
return netlink.NetworkLinkDown(iface)
}
func downNetworkInterfaces(interfaces []network.InterfaceGenerator) error {
sysInterfaceMap := make(map[string]*net.Interface)
if systemInterfaces, err := net.Interfaces(); err == nil {
for _, iface := range systemInterfaces {
iface := iface
sysInterfaceMap[iface.Name] = &iface
}
} else {
return err
}
for _, iface := range interfaces {
if systemInterface, ok := sysInterfaceMap[iface.Name()]; ok {
log.Printf("Taking down interface %q\n", systemInterface.Name)
if err := netlink.NetworkLinkDown(systemInterface); err != nil {
log.Printf("Error while downing interface %q (%s). Continuing...\n", systemInterface.Name, err)
}
}
}
return nil
}