method

link_local?

v2_5_5 - Show latest stable - 0 notes - Class: IPAddr

1_8_6_287
1_8_7_72
1_8_7_330
1_9_1_378
1_9_2_180
1_9_3_125
1_9_3_392
2_1_10
2_2_9
2_4_6
2_5_5 (0)
2_6_3 (0)
What's this?

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.

Show source

# 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?

Related methods

Flowdock - Team Inbox With Chat