ipv6privateloopback.sh
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#!/bin/sh
# Assuming you want to make a random private /120 prefix in IP and have all of
# those addresses assigned to the loopback interface (dev lo), and you're root,
# and have https://gitlab.com/ipcalc/ipcalc installed, and aren't in a network
# namespace other than global, run:
#
# If you also want to be able to bind to those IP addresses, run the following command:
# sysctl -w net.ipv6.ip_nonlocal_bind = 1
#
#
# IPv4 is obsolete, so IP in this document means IPv6
#
# ~jmjl
# Sets NETWORK and PREFIX with the random network
# and 120, which is the prefix we have hardcoded in this line.
eval "$(ipcalc -r 120 -np)"
# Making it such that netpref is the network + prefix so we can give it to ip
netpref="${NETWORK}/${PREFIX}"
# Adds the address to the loopback interface lo, and sets scope to host as this
# IP will only be valid inside this host
ip addr add "$netpref" dev lo scope host
# Adds a route so that traffic going to the IP range will go to the local
# machine
ip route add local "$netpref" dev lo
| 1 | #!/bin/sh |
| 2 | # Assuming you want to make a random private /120 prefix in IP and have all of |
| 3 | # those addresses assigned to the loopback interface (dev lo), and you're root, |
| 4 | # and have https://gitlab.com/ipcalc/ipcalc installed, and aren't in a network |
| 5 | # namespace other than global, run: |
| 6 | # |
| 7 | # If you also want to be able to bind to those IP addresses, run the following command: |
| 8 | # sysctl -w net.ipv6.ip_nonlocal_bind = 1 |
| 9 | # |
| 10 | # |
| 11 | # IPv4 is obsolete, so IP in this document means IPv6 |
| 12 | # |
| 13 | # ~jmjl |
| 14 | |
| 15 | # Sets NETWORK and PREFIX with the random network |
| 16 | # and 120, which is the prefix we have hardcoded in this line. |
| 17 | eval "$(ipcalc -r 120 -np)" |
| 18 | |
| 19 | # Making it such that netpref is the network + prefix so we can give it to ip |
| 20 | netpref="${NETWORK}/${PREFIX}" |
| 21 | |
| 22 | # Adds the address to the loopback interface lo, and sets scope to host as this |
| 23 | # IP will only be valid inside this host |
| 24 | ip addr add "$netpref" dev lo scope host |
| 25 | |
| 26 | # Adds a route so that traffic going to the IP range will go to the local |
| 27 | # machine |
| 28 | ip route add local "$netpref" dev lo |
| 29 |