link: add LinkSetIP6AddrGenMode

handle_unspecified.go

@@ -171,6 +171,10 @@ func (h *Handle) LinkSetGROMaxSize(link Link, maxSize int) error {
  return ErrNotImplemented
 }
 
+func (h *Handle) LinkSetIP6AddrGenMode(link Link, mode int) error {
+ return ErrNotImplemented
+}
+
 func (h *Handle) setProtinfoAttr(link Link, mode bool, attr int) error {
  return ErrNotImplemented
 }

link_linux.go

@@ -1010,6 +1010,35 @@ func (h *Handle) LinkSetGROMaxSize(link Link, maxSize int) error {
  return err
 }
 
+// LinkSetIP6AddrGenMode sets the IPv6 address generation mode of the link device.
+// Equivalent to: `ip link set $link addrgenmode $mode`
+func LinkSetIP6AddrGenMode(link Link, mode int) error {
+ return pkgHandle.LinkSetIP6AddrGenMode(link, mode)
+}
+
+// LinkSetIP6AddrGenMode sets the IPv6 address generation mode of the link device.
+// Equivalent to: `ip link set $link addrgenmode $mode`
+func (h *Handle) LinkSetIP6AddrGenMode(link Link, mode int) error {
+ base := link.Attrs()
+ h.ensureIndex(base)
+ req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK)
+
+ msg := nl.NewIfInfomsg(unix.AF_UNSPEC)
+ msg.Index = int32(base.Index)
+ req.AddData(msg)
+
+ b := make([]byte, 1)
+ b[0] = uint8(mode)
+
+ data := nl.NewRtAttr(unix.IFLA_INET6_ADDR_GEN_MODE, b)
+ af := nl.NewRtAttr(unix.AF_INET6, data.Serialize())
+ spec := nl.NewRtAttr(unix.IFLA_AF_SPEC, af.Serialize())
+ req.AddData(spec)
+
+ _, err := req.Execute(unix.NETLINK_ROUTE, 0)
+ return err
+}
+
 func boolAttr(val bool) []byte {
  var v uint8
  if val {

netlink_unspecified.go

@@ -132,6 +132,10 @@ func LinkSetGROMaxSize(link Link, maxSize int) error {
  return ErrNotImplemented
 }
 
+func LinkSetIP6AddrGenMode(link Link, mode int) error {
+ return ErrNotImplemented
+}
+
 func LinkAdd(link Link) error {
  return ErrNotImplemented
 }

nl/link_linux.go

@@ -718,3 +718,10 @@ const (
  IFLA_BAREUDP_MULTIPROTO_MODE
  IFLA_BAREUDP_MAX = IFLA_BAREUDP_MULTIPROTO_MODE
 )
+
+const (
+ IN6_ADDR_GEN_MODE_EUI64 = iota
+ IN6_ADDR_GEN_MODE_NONE
+ IN6_ADDR_GEN_MODE_STABLE_PRIVACY
+ IN6_ADDR_GEN_MODE_RANDOM
+)