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instance method

IPAddr#netmask

() -> ::String

netmask

# File tmp/rubies/ruby-4.1.0-preview1/lib/ipaddr.rb, line 548
def netmask
  _to_string(@mask_addr)
end

Returns the netmask in string format e.g. 255.255.0.0

See also #native #prefix #multicast? #prefix= also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1