[TASK] change default listing address to ff05::2:1001

take a look at: freifunk-gluon/gluon@59a4427

README.md

@@ -20,7 +20,7 @@ Yet another node info collector
 
 ## How it works
 
-In the first step Yanic sends a multicast message to the group `ff02:0:0:0:0:0:2:1001` and port `1001`.
+In the first step Yanic sends a multicast message to the group `ff05:0:0:0:0:0:2:1001` and port `1001`.
 Recently seen nodes that does not reply are requested via a unicast message.
 
 ## Documentation

config_example.toml

@@ -23,14 +23,14 @@ domains            = ["city"]
 # name of interface on which this collector is running
 ifname = "br-ffhb"
 # ip address which is used for sending
-# (optional - without definition used a address of ifname)
+# (optional - without definition used a address of ifname - prefered link local)
 ip_address = "fd2f:5119:f2d::5"
 # disable sending multicast respondd request
 # (for receiving only respondd packages e.g. database respondd)
 #send_no_request = false
 # multicast address to destination of respondd
-# (optional - without definition used batman default ff02::2:1001)
-multicast_address = "ff05::2:1001"
+# (optional - without definition used default ff05::2:1001)
+#multicast_address = "ff02::2:1001"
 # define a port to listen
 # if not set or set to 0 the kernel will use a random free port at its own
 #port = 10001

docs/docs_configuration.md

@@ -52,7 +52,7 @@ synchronize      = "1m"
 {% method %}
 How often send request per respondd.
 
-It will send UDP packets with multicast address `ff02::2:1001` and port `1001`.
+It will send UDP packets with multicast address `ff05::2:1001` and port `1001`.
 If a node does not answer after the half time, it will request with the last know address under the port `1001`.
 {% sample lang="toml" %}
 ```toml
@@ -110,7 +110,7 @@ ifname              = "br-ffhb"
 {% method %}
 ip address is the own address which is used for sending.
 If not set or set with empty string it will take an address of ifname.
-(If `multicast_address` is not set the link local address otherwise a global unicast address)
+(It preferes the link local address, so at babel mesh-network it should be configurated)
 {% sample lang="toml" %}
 ```toml
 ip_address          = "fe80::..."
@@ -130,8 +130,8 @@ send_no_request     = true
 ### multicast_address
 {% method %}
 Multicast address to destination of respondd.
-If not set or set with empty string it will take the batman default multicast address `ff02::2:1001`
-(Needed in babel for a mesh-network wide routeable multicast addreess `ff05::2:1001`)
+If not set or set with empty string it will take the batman default multicast address `ff05::2:1001`
+(Needed to set for legacy `ff02::2:1001`)
 {% sample lang="toml" %}
 ```toml
 multicast_address    = "ff02::2:1001"

docs/home_about.md

@@ -7,7 +7,7 @@ A little overview of yanic in connection with other software:
 
 It sends the `gluon-neighbour-info` request and collects the answers.
 
-It will send UDP packets with multicast address `ff02:0:0:0:0:0:2:1001` and port `1001`.
+It will send UDP packets with multicast address `ff05:0:0:0:0:0:2:1001` and port `1001`.
 
 If a node does not answer, it will request with the last know address under the port `1001`.
 

respond/collector.go

@@ -66,7 +66,7 @@ func (coll *Collector) listenUDP(iface InterfaceConfig) {
 	if iface.IPAddress != "" {
 		addr = net.ParseIP(iface.IPAddress)
 	} else {
-		addr, err = getUnicastAddr(iface.InterfaceName, iface.MulticastAddress == "")
+		addr, err = getUnicastAddr(iface.InterfaceName)
 		if err != nil {
 			log.WithField("iface", iface.InterfaceName).Panic(err)
 		}
@@ -99,7 +99,7 @@ func (coll *Collector) listenUDP(iface InterfaceConfig) {
 }
 
 // Returns a unicast address of given interface (linklocal or global unicast address)
-func getUnicastAddr(ifname string, linklocal bool) (net.IP, error) {
+func getUnicastAddr(ifname string) (net.IP, error) {
 	iface, err := net.InterfaceByName(ifname)
 	if err != nil {
 		return nil, err
@@ -116,7 +116,7 @@ func getUnicastAddr(ifname string, linklocal bool) (net.IP, error) {
 		if !ok {
 			continue
 		}
-		if (!linklocal && ipnet.IP.IsGlobalUnicast()) || (linklocal && ipnet.IP.IsLinkLocalUnicast()) {
+		if (ip == nil && ipnet.IP.IsGlobalUnicast()) || ipnet.IP.IsLinkLocalUnicast() {
 			ip = ipnet.IP
 		}
 	}

respond/respond.go

@@ -6,7 +6,7 @@ import (
 
 const (
 	// default multicast group used by announced
-	multicastAddressDefault = "ff02:0:0:0:0:0:2:1001"
+	multicastAddressDefault = "ff05:0:0:0:0:0:2:1001"
 
 	// default udp port used by announced
 	port = 1001