In this tutorial, we are going to learn about IsLinkLocalMulticast() function of net package in go with example.
IsLinkLocalMulticast() function is used to check whether ip is a link-local multicast address or not of net package in go.
function prototype:
func (ip IP) IsLinkLocalMulticast() bool Function returns true if ip is a link-local multicast address else false.
Example:
package main
import (
"fmt"
"net"
)
func main() {
ipv4_ip := net.ParseIP("224.0.0.0")
is_link_local_multicast := ipv4_ip.IsLinkLocalMulticast()
if is_link_local_multicast == true {
fmt.Println("224.0.0.0 is a link-local multicast address.")
} else {
fmt.Println("224.0.0.0 is not a link-local multicast address.")
}
ipv4_ip = net.ParseIP("255.254.0.0")
is_link_local_multicast = ipv4_ip.IsLinkLocalMulticast()
if is_link_local_multicast == true {
fmt.Println("255.254.0.0 is a link-local multicast address.")
} else {
fmt.Println("255.254.0.0 is not a link-local multicast address.")
}
ipv6_ip := net.ParseIP("ff02::2")
is_link_local_multicast = ipv6_ip.IsLinkLocalMulticast()
if is_link_local_multicast == true {
fmt.Println("ff02::2 is a link-local multicast address.")
} else {
fmt.Println("ff02::2 is not a link-local multicast address.")
}
ipv6_ip = net.ParseIP("fe80::")
is_link_local_multicast = ipv6_ip.IsLinkLocalMulticast()
if is_link_local_multicast == true {
fmt.Println("fe80:: is a link-local multicast address.")
} else {
fmt.Println("fe80:: is not a link-local multicast address.")
}
}
Output:
224.0.0.0 is a link-local multicast address. 255.254.0.0 is not a link-local multicast address. ff02::2 is a link-local multicast address. fe80:: is not a link-local multicast address.
What is link-local address ?
A link-local address is required on each physical interface. A link-local address is used for addressing on a single link for automatic address configuration, neighbour discovery or in the absence of routers. A link-local address may also be used to communicate with other nodes on the same link and It’s assigned automatically.
To learn more about golang, Please refer given below link:
https://techieindoor.com/go-lang-tutorial/
References: https://golang.org/pkg/