# Useable addresses: Network size minus two for Network & Broadcast and:
# IPv6 uses 8 sets of 4 hex values, 16 bits each (128bit total)
# /48 ISP "site assignments" have 65k possible subnets: bourne$ for a in {1..65536}; do printf "%04X\n" $a; done
# Withing a /48, any combination of /49 ---> /64 are valid supernets (departmental, facility, function, other organizational model): $ ipv6gen 2001:0DC6:FF2B::/48 63|more
# ...normally three or four more hosts are used for: 1) Switch VLAN1 2) Router Interface or 3) Two HSRP interfaces at .253 & .254
# "Route Summarization" = "Route Aggregation" = "Supernetting"
# "terminal ip netmask-format [bitcount|decimal|hex]" on Cisco IOS to show netmasks as Dotted Decimal v.s. Hex
# Print this document and keep on wall in cubical at all times. Memorize for fun. Quiz your spouse, offspring, inlaws, etc.
# #include <std/disclaimer.h> in the event that a typo within snowballs your entire corporate network
