four2six(8)

📦
version 3.8 · 7 versions
, in epel 9

✨ four2six ✨

okay bestie, quick vibe check: this is the four2six page from the IPv6 section of the manual — yes, section 8, admin-tools territory 🔥 — and it's about yeeting IPv4 packets at an IPv6 4to6 gateway. it's giving "tunnel girl summer" fr fr 💅

🎀 SYNOPSIS 🎀

four2six [-FHD] [-m srcmac] [-s src6] [-p srcport] interface ipv6-to-ipv4-gateway ipv4-src ipv4-dst [port]

🌸 OPTIONS 🌸

  • -F — shove in an atomic fragment header. and yes, you can absolutely set this multiple times, it's that kind of flag 💫
  • -H — insert an empty hop-by-hop header. lowkey minimalist, highkey suspicious 🦋
  • -D — insert a big chonky destination header that actually fragments the packet. not me making the packet do acrobatics 😭
  • -p srcport — pick a specific UDP source port, or a Ping ID. your number, your rules 👑
  • -s src6 — set a specific IPv6 source address. main character address energy ✨
  • -m srcmac — set a specific MAC source address. a little costume change for your packet 🎀

Send an IPv4 packet to an IPv6 4to6 gateway. if you pass a port, a UDP packet gets sent — otherwise it's an ICMPv4 ping, no cap.

ngl, this is a packet-crafting tool, so please only point it at stuff you're actually allowed to poke at. bestie behavior only 🫶

💜 AUTHOR 💜

thc-ipv6 was written by van Hauser <vh@thc.org> / THC 🧚

the homepage for this whole toolkit is literally right here: https://github.com/vanhauser-thc/thc-ipv6 — go say hi 💖

four2six 3.8 (c) 2020 by van Hauser / THC <vh@thc.org>
www.github.com/vanhauser-thc/thc-ipv6

and that's the whole page, bestie — this server-tooling moment was brought to you by THC, dated 2022-06-19, filed under four2six(8). slay, stay safe, and go read the SEE ALSO section of your life 🌟💅

📦 where this page comes from