PROBE::NETFILTER.B(3stap)

✨ NAME ✨

probe::netfilter.bridge.post_routing — okay bestie, this one fires right before a bridging packet hits the wire 💅

---

🌸 SYNOPSIS 🌸

probe netfilter.bridge.post_routing {}

---

🎀 VALUES 🎀

okay so here's everything this probe hands you, no cap, all of it 👑

• br_type — the BPDU type, periodt
• br_fd — forward delay, measured in 1/256 secs
• br_bid — identity of the bridge
• br_flags — the BPDU flags
• br_vid — protocol version identifier
• nf_queue — the constant that signifies a 'queue' verdict
• nf_drop — the constant that signifies a 'drop' verdict 💀
• br_htime — hello time, in 1/256 secs
• llcproto_stp — the constant that signifies a Bridge Spanning Tree Protocol packet
• data_str — a string representing the packet buffer contents
• br_msg — message age, in 1/256 secs
• nf_stolen — the constant that signifies a 'stolen' verdict
• outdev_name — name of the network device the packet will be routed to (if known)
• data_hex — a hexadecimal string representing the packet buffer contents
• brhdr — address of the bridge header
• length — the length of the packet buffer contents, in bytes
• br_cost — total cost from transmitting bridge to root
• br_rid — identity of the root bridge
• indev_name — name of the network device the packet was received on (if known)
• br_poid — port identifier
• protocol — packet protocol
• llcpdu — address of the LLC Protocol Data Unit
• nf_stop — the constant that signifies a 'stop' verdict
• nf_repeat — the constant that signifies a 'repeat' verdict
• nf_accept — the constant that signifies an 'accept' verdict
• br_max — max age, in 1/256 secs
• br_rmac — root bridge MAC address
• outdev — address of the net_device representing the output device, 0 if unknown
• br_prid — protocol identifier
• pf — protocol family — always “bridge” 🦋
• br_mac — bridge MAC address
• indev — address of the net_device representing the input device, 0 if unknown

ngl, that's a lot of bridge-flavored constants, but they're all yours now 🫶

---

💖 SEE ALSO 💖

• tapset::netfilter(3stap)

---

and that's the whole vibe ✨ this lil slice of the SystemTap Tapset Reference is dated September 2026 — the version column got squished down to just Ver 🙈 but whatever, she's iconic, slay, go read the netfilter tapset bestie 👑💅