# All zeros:
::
# Loopback:
::1
# All ones (ffff:...:ffff):
ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
# Full range:
::/0
# Link-local:
fe80::1
# Adjacent at bottom:
::/127
# Count /1 (half the IPv6 space):
1,170141183460469231731687303715884105728
