diff options
| -rw-r--r-- | lib/ipaddress/ipv4.rb | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/ipaddress/ipv4.rb b/lib/ipaddress/ipv4.rb index a32a4a0..38afbb1 100644 --- a/lib/ipaddress/ipv4.rb +++ b/lib/ipaddress/ipv4.rb @@ -585,6 +585,20 @@ module IPAddress; end # + # Checks if an IPv4 address objects belongs + # to a multicast network RFC3171 + # + # Example: + # + # ip = IPAddress "224.0.0.0/4" + # ip.multicast? + # #=> true + # + def multicast? + [self.class.new("224.0.0.0/4")].any? {|i| i.include? self} + end + + # # Returns the IP address in in-addr.arpa format # for DNS lookups # |