I once wrote on this topic, numeric IP addresses: https://raymii.org/s/articles/IPv4_Address_Conversion_Tricks.html https://raymii.org/s/articles/IPv4_Address_

I once wrote on this topic, numeric IP addresses: https://raymii.org/s/articles/IPv4_Address_Conversion_Tricks.html https://raymii.org/s/articles/IPv4_Address_Conversion_Tricks... This "feature" is documented in the inet_aton(3) manpage.