3 ms·
Huge ranges of IPv6 addresses are extremely common, virtually no ISP can be bothered to allocate smaller blocks than a /64. The minimum allocation of addresses
by Godel_unicode 5y ago
Huge ranges of IPv6 addresses are extremely common, virtually no ISP can be bothered to allocate smaller blocks than a /64. The minimum allocation of addresses recommended is a /32, which is 65k addresses.
You also know they don't mean port numbers because there's no such thing as a 6-digit port number.
From tfa:
"""Imagine your SSH server only listens on an IPv6 address, and where the last 6 digits are changing every 30 seconds"""