[ruby/ipaddr] String#split seems to be faster than capturing digits with Regexp
https://github.com/ruby/ipaddr/commit/e0feb0708b
[ruby/ipaddr] String#split seems to be faster than capturing digits with Regexp
https://github.com/ruby/ipaddr/commit/e0feb0708b