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//go:build linux
// +build linux
package rtnetlink_test
import (
"log"
"net"
"github.com/jsimonetti/rtnetlink/v2"
"golang.org/x/sys/unix"
)
// Set the operational state an interface to Up
func Example_setLinkUp() {
// Gather the interface Index
iface, _ := net.InterfaceByName("dummy0")
// Dial a connection to the rtnetlink socket
conn, err := rtnetlink.Dial(nil)
if err != nil {
log.Fatal(err)
}
defer conn.Close()
// Request the details of the interface
msg, err := conn.Link.Get(uint32(iface.Index))
if err != nil {
log.Fatal(err)
}
state := msg.Attributes.OperationalState
// If the link is already up, return immediately
if state == rtnetlink.OperStateUp || state == rtnetlink.OperStateUnknown {
return
}
// Set the interface operationally UP
err = conn.Link.Set(&rtnetlink.LinkMessage{
Family: unix.AF_UNSPEC,
Type: msg.Type,
Index: uint32(iface.Index),
Flags: unix.IFF_UP,
Change: unix.IFF_UP,
})
log.Fatal(err)
}
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