Net 1115 (#2890)

* add endpointipv6 for host

* keep endpointipv6 unchanged when enable static endpoint

* handle ipv6 endpoint updates

---------

Co-authored-by: abhishek9686 <abhi281342@gmail.com>

cli/cmd/host/update.go

@@ -14,6 +14,7 @@ import (
 var (
 	apiHostFilePath string
 	endpoint        string
+	endpoint6       string
 	name            string
 	listenPort      int
 	mtu             int
@@ -40,6 +41,7 @@ var hostUpdateCmd = &cobra.Command{
 		} else {
 			apiHost.ID = args[0]
 			apiHost.EndpointIP = endpoint
+			apiHost.EndpointIPv6 = endpoint6
 			apiHost.Name = name
 			apiHost.ListenPort = listenPort
 			apiHost.MTU = mtu
@@ -54,6 +56,7 @@ var hostUpdateCmd = &cobra.Command{
 func init() {
 	hostUpdateCmd.Flags().StringVar(&apiHostFilePath, "file", "", "Path to host_definition.json")
 	hostUpdateCmd.Flags().StringVar(&endpoint, "endpoint", "", "Endpoint of the Host")
+	hostUpdateCmd.Flags().StringVar(&endpoint6, "endpoint6", "", "IPv6 Endpoint of the Host")
 	hostUpdateCmd.Flags().StringVar(&name, "name", "", "Host name")
 	hostUpdateCmd.Flags().IntVar(&listenPort, "listen_port", 0, "Listen port of the host")
 	hostUpdateCmd.Flags().IntVar(&mtu, "mtu", 0, "Host MTU size")

logic/hosts.go

@@ -217,6 +217,7 @@ func UpdateHost(newHost, currentHost *models.Host) {
 	newHost.Nodes = currentHost.Nodes
 	newHost.PublicKey = currentHost.PublicKey
 	newHost.TrafficKeyPublic = currentHost.TrafficKeyPublic
+	newHost.EndpointIPv6 = currentHost.EndpointIPv6
 	// changeable fields
 	if len(newHost.Version) == 0 {
 		newHost.Version = currentHost.Version
@@ -258,6 +259,10 @@ func UpdateHostFromClient(newHost, currHost *models.Host) (sendPeerUpdate bool)
 		currHost.EndpointIP = newHost.EndpointIP
 		sendPeerUpdate = true
 	}
+	if currHost.EndpointIPv6.String() != newHost.EndpointIPv6.String() {
+		currHost.EndpointIPv6 = newHost.EndpointIPv6
+		sendPeerUpdate = true
+	}
 	currHost.DaemonInstalled = newHost.DaemonInstalled
 	currHost.Debug = newHost.Debug
 	currHost.Verbosity = newHost.Verbosity

logic/peers.go

@@ -207,8 +207,21 @@ func GetPeerUpdateForHost(network string, host *models.Host, allNodes []models.N
 					uselocal = false
 				}
 			}
+
+			//if host is ipv4 only or ipv4+ipv6, set the peer endpoint to ipv4 address, if host is ipv6 only, set the peer endpoint to ipv6 address
+			peerEndpoint := peerHost.EndpointIP
+			if ipv4 := host.EndpointIP.To4(); ipv4 != nil {
+				peerEndpoint = peerHost.EndpointIP
+			} else {
+				//if peer host's ipv6 address is empty, it means that peer is an IPv4 only host
+				//IPv4 only host could not communicate with IPv6 only host
+				if peerHost.EndpointIPv6 != nil && peerHost.EndpointIPv6.String() != "" {
+					peerEndpoint = peerHost.EndpointIPv6
+				}
+			}
+
 			peerConfig.Endpoint = &net.UDPAddr{
-				IP:   peerHost.EndpointIP,
+				IP:   peerEndpoint,
 				Port: GetPeerListenPort(peerHost),
 			}
 

models/api_host.go

@@ -22,6 +22,7 @@ type ApiHost struct {
 	Interfaces          []ApiIface `json:"interfaces"            yaml:"interfaces"`
 	DefaultInterface    string     `json:"defaultinterface"      yaml:"defautlinterface"`
 	EndpointIP          string     `json:"endpointip"            yaml:"endpointip"`
+	EndpointIPv6        string     `json:"endpointipv6"            yaml:"endpointipv6"`
 	PublicKey           string     `json:"publickey"`
 	MacAddress          string     `json:"macaddress"`
 	Nodes               []string   `json:"nodes"`
@@ -43,6 +44,7 @@ func (h *Host) ConvertNMHostToAPI() *ApiHost {
 	a := ApiHost{}
 	a.Debug = h.Debug
 	a.EndpointIP = h.EndpointIP.String()
+	a.EndpointIPv6 = h.EndpointIPv6.String()
 	a.FirewallInUse = h.FirewallInUse
 	a.ID = h.ID.String()
 	a.Interfaces = make([]ApiIface, len(h.Interfaces))
@@ -83,6 +85,11 @@ func (a *ApiHost) ConvertAPIHostToNMHost(currentHost *Host) *Host {
 	} else {
 		h.EndpointIP = net.ParseIP(a.EndpointIP)
 	}
+	if len(a.EndpointIPv6) == 0 || strings.Contains(a.EndpointIPv6, "nil") {
+		h.EndpointIPv6 = currentHost.EndpointIPv6
+	} else {
+		h.EndpointIPv6 = net.ParseIP(a.EndpointIPv6)
+	}
 	h.Debug = a.Debug
 	h.FirewallInUse = a.FirewallInUse
 	h.IPForwarding = currentHost.IPForwarding

models/host.go

@@ -63,6 +63,7 @@ type Host struct {
 	Interfaces          []Iface          `json:"interfaces"              yaml:"interfaces"`
 	DefaultInterface    string           `json:"defaultinterface"        yaml:"defaultinterface"`
 	EndpointIP          net.IP           `json:"endpointip"              yaml:"endpointip"`
+	EndpointIPv6        net.IP           `json:"endpointipv6"            yaml:"endpointipv6"`
 	IsDocker            bool             `json:"isdocker"                yaml:"isdocker"`
 	IsK8S               bool             `json:"isk8s"                   yaml:"isk8s"`
 	IsStatic            bool             `json:"isstatic"                yaml:"isstatic"`

mq/handlers.go

@@ -282,9 +282,11 @@ func HandleHostCheckin(h, currentHost *models.Host) bool {
 		!h.EndpointIP.Equal(currentHost.EndpointIP) ||
 		(len(h.NatType) > 0 && h.NatType != currentHost.NatType) ||
 		h.DefaultInterface != currentHost.DefaultInterface ||
-		(h.ListenPort != 0 && h.ListenPort != currentHost.ListenPort) || (h.WgPublicListenPort != 0 && h.WgPublicListenPort != currentHost.WgPublicListenPort)
+		(h.ListenPort != 0 && h.ListenPort != currentHost.ListenPort) ||
+		(h.WgPublicListenPort != 0 && h.WgPublicListenPort != currentHost.WgPublicListenPort) || (!h.EndpointIPv6.Equal(currentHost.EndpointIPv6))
 	if ifaceDelta { // only save if something changes
 		currentHost.EndpointIP = h.EndpointIP
+		currentHost.EndpointIPv6 = h.EndpointIPv6
 		currentHost.Interfaces = h.Interfaces
 		currentHost.DefaultInterface = h.DefaultInterface
 		currentHost.NatType = h.NatType