ip6snetc is a tool for calculating and listing IPv6 networks.
ip6snetc is licensed under Eclipse Public License 2.0.
# ip6snetc <IPv6 network address> [<subnet prefix>]
# ./ip6snetc 2001:db8::1/32
--- IPv6 network / address information:
Address 2001:db8::1
Network 2001:db8::/32
Prefix ffff:ffff:0000:0000:0000:0000:0000:0000
from 2001:0db8:0000:0000:0000:0000:0000:0000
to 2001:0db8:ffff:ffff:ffff:ffff:ffff:ffff
Type IPv6 Address Prefix Reserved for Documentation
RFC RFC3849
src false
dst false
fwd false
global false
IPv6 res false
# ./ip6snetc 2001:db8::1/32 33
--- IPv6 network / address information:
Address 2001:db8::1
Network 2001:db8::/32
Prefix ffff:ffff:0000:0000:0000:0000:0000:0000
from 2001:0db8:0000:0000:0000:0000:0000:0000
to 2001:0db8:ffff:ffff:ffff:ffff:ffff:ffff
Type IPv6 Address Prefix Reserved for Documentation
RFC RFC3849
src false
dst false
fwd false
global false
IPv6 res false
--- Subnet data:
Subnet Prefix /33
Subnets 2
Network 2001:db8::/33
Prefix ffff:ffff:8000:0000:0000:0000:0000:0000
from 2001:0db8:0000:0000:0000:0000:0000:0000
to 2001:0db8:7fff:ffff:ffff:ffff:ffff:ffff
Network 2001:db8:8000::/33
Prefix ffff:ffff:8000:0000:0000:0000:0000:0000
from 2001:0db8:8000:0000:0000:0000:0000:0000
to 2001:0db8:ffff:ffff:ffff:ffff:ffff:ffff
ip6snetc is written for luajit and Lua 5.1. It uses lua bitop (https://bitop.luajit.org/) library.
Luajit has BitOp integrated. For standard Lua one needs to install BitOp separately.
# sudo emerge -v LuaBitOp
This script contains a shebang for running with Luajit.
In case you'd like to use standard Lua instead, you'll need to edit the first line of ip6snetc to be:
#!/usr/bin/env lua
Other option is to call the script directly with Lua. Example:
# lua ip6snetc 2001:db8::1/32