method

link_local?

Ruby latest stable (v2_5_5) - 0 notes - Class: IPAddr

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link_local?() public

Returns true if the ipaddr is a link-local address. IPv4 addresses in 169.254.0.0/16 reserved by RFC 3927 and Link-Local IPv6 Unicast Addresses in fe80::/10 reserved by RFC 4291 are considered link-local.

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# File lib/ipaddr.rb, line 295
  def link_local?
    case @family
    when Socket::AF_INET
      @addr & 0xffff0000 == 0xa9fe0000 # 169.254.0.0/16
    when Socket::AF_INET6
      @addr & 0xffc0_0000_0000_0000_0000_0000_0000_0000 == 0xfe80_0000_0000_0000_0000_0000_0000_0000
    else
      raise AddressFamilyError, "unsupported address family"
    end
  end

link_local?

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