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authorSubhash Murmu <subhashmurmujsr2511@gmail.com>2026-07-17 11:08:33 +0000
committerLorenzo Salvadore <salvadore@FreeBSD.org>2026-07-17 11:09:40 +0000
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parent9da80e6c34f34d3421ea3aeb8731b823562cd6aa (diff)
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+=== Native MPLS Support for FreeBSD
+
+Links: +
+link:https://wiki.freebsd.org/SummerOfCode2026Projects/NativeMPLSSupportForFreeBSD[GSoC Project Wiki] +
+link:https://codeberg.org/Subhash_Murmu/freebsd-src[FreeBSD Source Fork]
+
+Contact: Subhash Murmu <subhashmurmujsr2511@gmail.com>
+
+This project adds native Multiprotocol Label Switching (MPLS) support to the FreeBSD kernel as part of Google Summer of Code 2026, mentored by Bruce Simpson and Alexander Chernikov.
+MPLS is widely deployed for label-switched forwarding in production networks, but FreeBSD has no MPLS data plane in the base system, so MPLS-capable routing daemons have no kernel forwarding path to program.
+The work is built bottom-up, from wire-level encapsulation through the control plane, and integrates with the existing FreeBSD network stack rather than sitting beside it.
+
+Phases 1 through 3 are complete and pushed as a five-commit layered history on the `mpls` branch of the Codeberg fork.
+Phase 1 adds link-layer encapsulation and man:netisr[9] dispatch for EtherType 0x8847.
+Phase 2 ports OpenBSD's man:ldpd[8] to FreeBSD, where it now builds and runs.
+Phase 3 adds the forwarding engine and a per-VNET Label Information Base, with end-to-end LSP transit verified under tcpdump between VNET jails over man:epair[4].
+
+The series has not yet been submitted to Phabricator.
+Work continues on kernel route programming for ldpd.
+
+Sponsor: Google Summer of Code 2026