ipg: A simple IPv6 address generator for lazy netadmins

ipg is a small tool for netadmins wanting to generate random IPv6 addresses or based on the hostname of a machine and want to obtain the DNS and PTR records ready to paste on their DNS zone.

ipg is a replacement of an old script I created in 2020 called v6gen.

Features

• Generate a random IPv6 address
• Generate an IPv6 based on the given hostname
• Return the ARPA version of the IPv6 address
• Return a DNS and/or a PTR record
• Get the output in a JSON format or in a more humain friendly one

Installation

You can get the binaries for your operating system and your platform architecture from the releases page.

You can also compile and install it manually by simply typing:

go install github.com/themimitoof/ipg

You can also use the Docker image by typing:

docker run --rm ghcr.io/themimitoof/ipg --help

Note: You can also pull the image based on the main branch or from a specific version by typing:

docker pull ghcr.io/themimitoof/ipg:main
# or
docker pull ghcr.io/themimitoof/ipg:v1.0.0

Usage

$ ipg --help
Usage: ipg <subnet>

A simple IPv6 generator for lazy netadmins.

Arguments:
  <subnet>    IPv6 Subnet

Flags:
  -h, --help                Show context-sensitive help.
  -r, --random              Generate a random IPv6 address on the given subnet.
  -n, --name="hostname"     Specify the hostname of a machine, an IPv6 address will be generated based on it.
  -s, --silent              Only display values without their labels.
  -f, --format="console"    Specify the type of output. Possible values: console, json
  -a, --address             Display the generated IP address.
  -R, --reverse             Display the ARPA version of the IP address.
  -d, --dns                 Returns a DNS record ready to paste to a DNS zone.
  -x, --rrecord             Returns a rDNS record ready to paste to a DNS zone.
  -t, --ttl=86400           TTL value for DNS returned DNS records.

To generate a random IPv6 address:

$ ipg -r 2001:db8:beef::/64
IP address: 2001:db8:beef:0:9e20:7abf:4b9c:2d45
Reverse IP address: 5.4.d.2.c.9.b.4.f.b.a.7.0.2.e.9.0.0.0.0.f.e.e.b.8.b.d.0.1.0.0.2.ip6.arpa
DNS record: hostname    86400    IN    AAAA    2001:db8:beef:0:9e20:7abf:4b9c:2d45
ARPA DNS record: 5.4.d.2.c.9.b.4.f.b.a.7.0.2.e.9.0.0.0.0.f.e.e.b.8.b.d.0.1.0.0.2.ip6.arpa.    86400    IN    PTR    hostname

To generate an IPv6 address based on the hostname of a machine:

$ ipg -n hello 2001:db8:beef::/64
IP address: 2001:db8:beef::68:656c:6c6f
Reverse IP address: f.6.c.6.c.6.5.6.8.6.0.0.0.0.0.0.0.0.0.0.f.e.e.b.8.b.d.0.1.0.0.2.ip6.arpa
DNS record: hello    86400    IN    AAAA    2001:db8:beef::68:656c:6c6f
ARPA DNS record: f.6.c.6.c.6.5.6.8.6.0.0.0.0.0.0.0.0.0.0.f.e.e.b.8.b.d.0.1.0.0.2.ip6.arpa.    86400    IN    PTR    hello

You can also get a random IPv6 address and give the hostname of the machine to obtain a ready to paste DNS record:

$ ipg -rn hello.foobar.com 2001:db8:beef::/64
IP address: 2001:db8:beef:0:9639:1d78:7e2a:9646
Reverse IP address: 6.4.6.9.a.2.e.7.8.7.d.1.9.3.6.9.0.0.0.0.f.e.e.b.8.b.d.0.1.0.0.2.ip6.arpa
DNS record: hello.foobar.com.    86400    IN    AAAA    2001:db8:beef:0:9639:1d78:7e2a:9646
ARPA DNS record: 6.4.6.9.a.2.e.7.8.7.d.1.9.3.6.9.0.0.0.0.f.e.e.b.8.b.d.0.1.0.0.2.ip6.arpa.    86400    IN    PTR    hello.foobar.com

If you want to obtain one specific or multiple information like the IPv6 address and the reverse version:

$ ipg -rRa  2001:db8:beef::/64
IP address: 2001:db8:beef:0:d5b:ca60:88be:bfd1
Reverse IP address: 1.d.f.b.e.b.8.8.0.6.a.c.b.5.d.0.0.0.0.0.f.e.e.b.8.b.d.0.1.0.0.2.ip6.arpa

If you want to get an information without its label (e.g for piping with another command), use -s flag:

$ ipg -ras  2001:db8:beef::/64
2001:db8:beef:0:d5b:ca60:88be:bfd1

If you want to get a JSON version of the output:

$ ipg -r -n hello.foobar.com -f json 2001:db8:beef::/64 | jq
{
  "hostname": "hello.foobar.com",
  "ip_addr": "2001:db8:beef:0:5462:5f99:1a46:a2bc",
  "arpa_addr": "c.b.2.a.6.4.a.1.9.9.f.5.2.6.4.5.0.0.0.0.f.e.e.b.8.b.d.0.1.0.0.2.ip6.arpa",
  "dns_record": "hello.foobar.com.    86400    IN    AAAA    2001:db8:beef:0:5462:5f99:1a46:a2bc",
  "ptr_record": "c.b.2.a.6.4.a.1.9.9.f.5.2.6.4.5.0.0.0.0.f.e.e.b.8.b.d.0.1.0.0.2.ip6.arpa.    86400    IN    PTR    hello.foobar.com"
}

Note: filters are not available with the json format.

Contributions

In case you have a suggestion or want a new feature, feel free to open a discussion.

If you found a bug, you can open an issue.

In case you are able to fix by yourself a bug, enhance the code or implement a new feature, feel free to send a Pull request.

License

This project is released under the MIT license. Feel free to use, contribute, fork and do what you want with it. Please keep all licenses, copyright notices and mentions in case you use, re-use, steal, fork code from this repository.