dnsjit.core.object.gre(3)

💖 dnsjit.core.object.gre(3) — bestie's guide to the GRE object 🦋

okay so this is a page from the Library Functions Manual for dnsjit.core.object.gre, and it's literally just the GRE chunk of a packet, explained with love. let's get into it ✨

---

🌸 NAME 🌸

dnsjit.core.object.gre — the Generic Routing Encapsulation (GRE) part of a packet, periodt 💅

---

✨ DESCRIPTION ✨

so like, picture a packet that's been through the whole object-chain pipeline. this module is the GRE part of that packet — and you'll usually find it chillin' in the object chain after parsing with, for example, a Layer filter. iykyk 🫶

and fr fr, go read RFC 1701 if you wanna know the lore. it's giving "required reading" 👑

---

🎀 Attributes 🎀

• gre_flags — the GRE flags, obviously. the little vibe indicators of the header 💫
• ether_type — the protocol type of the payload packet. like, what's inside this thing? 🤔
• checksum — the checksum covering the GRE header and the payload packet. math girlies stay winning 🧮
• key — the Key field, a four octet number that was inserted by the encapsulator. yes, inserted. by the encapsulator. iconic behavior 🔑
• sequence — the Sequence Number field, an unsigned 32 bit integer that's inserted by the encapsulator. she's numbered, she's unsigned, she's 32 bits 💅

---

🧚 Functions 🧚

• Gre:type() — return the textual type of the object. just tells you what it is 🏷️
• Gre:prev() — return the previous object. go back one step, bestie ⏪
• Gre:cast() — cast the object to the underlining object module and return it. ✨
• Gre:uncast() — cast the object to the generic object module and return it. reverse uno 🃏
• Gre:copy() — make a copy of the object and return it. twin moment 👯
• Gre:free() — free the object. ⚠️ careful though: this should only be used on copies or on stuff that was otherwise allocated. do NOT go freeing things that aren't yours, that's a one-way ticket to chaos 💀

---

👀 SEE ALSO 👀

• dnsjit.core.object(3)
• dnsjit.filter.layer(3)

go read those next, they're part of the same universe 🌈

---

👑 AUTHORS and CONTRIBUTORS 👑

the legends who made this happen:

• Jerry Lundström (DNS-OARC)
• Tomáš Křížek (CZ.NIC)
• Petr Špaček (ISC)

Maintained by DNS-OARC 🫶

https://www.dns-oarc.net/

---

💀 BUGS 💀

got issues? got feature requests? don't suffer in silence, bestie:

https://codeberg.org/DNS-OARC/dnsjit/issues

questions and help? hit up:

admin@dns-oarc.net

---

and that's the whole page! this was dnsjit version 1.5.1, page dnsjit.core.object.gre(3), and yes she ate and left no crumbs 💅✨ bye bestie, go parse some packets 🦋