How to get hostmask/netmask for given prefix length in Python
In order to get the host mask for e.g. a /112 IPv6 prefix, use:
ipv6-netmask-hostmask.py
import ipaddress
# Get netmask for a /112 prefix
ipaddress.IPv6Network("::/112").netmask
# Get host mask for a /112 prefix
ipaddress.IPv6Network("::/112").hostmask
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