On 12/28/2017 12:53 AM, William Park via talk wrote: > - Netmask -- I could never remember the decimal number for various > netmasks. So, I created a little table: {netmask.pdf} You forgot IPv6. ;-) Actually, it's much simpler. An IPv6 network usually has a /64 network, with a ffff:ffff:ffff:ffff:: mask, but it's rare that you'd ever need to worry about it.