Yuya Kusakabe (higebu)
Software engineer living in Hokkaido, Japan.
Interested in network protocols and mobile core networks.
Father of four.
Projects
- SRv6 MUP — Implementation of RFC 9433 and draft-ietf-bess-mup-safi (Linux kernel, iproute2, FRR, GoBGP, RustyBGP, Wireshark, gobmp)
Upstream submissions: Linux kernel and iproute2 patches, FRR pull request - dsct — Packet analysis CLI for LLMs and large pcap files
- packet-dissector — Packet dissection library built so that dsct can handle large pcap files
- 3gpp-mcp — MCP server that lets LLMs search and read 3GPP specifications (article, in Japanese)
- rfc-mcp — MCP server for searching and reading RFCs and Internet-Drafts
- xk6-bgp — k6 extension for BGP benchmarking
OSS Contributions
Linux kernel / eBPF, XDP
Linux kernelcilium/ebpfiovisor/gobpfvishvananda/netlink
Infrastructure
Mobile core
BGP
GoBGPRustyBGPWiresharkgobmpzebra-rs
Other
Talks & Events
- 2025 A traffic generator built with XDP — eBPF Meetup Japan #4
- 2023 Implementing BGP-MUP SAFI and interoperability testing — IETF 116 Hackathon
- 2021 Testing and CI for XDP — Open Mobile Network Infra Meetup #4
- 2020 Building a mobile network data plane with XDP — ENOG63
- 2020 Custom packet processing and acceleration techniques compared in practice (XDP) — JANOG45
- 2018 Building an EPC in Go and running it in production — JANOG42
- 2018 Behind Sakura Secure Mobile Connect — Sakura no Yube in Sugoi Hiroshima
- 2018 VyOS Users Meeting Japan #5 (organizer)
- 2017 VyOS Users Meeting Japan #3 (organizer)
- 2016 MPLS with VyOS — IaaS Casual Talks #1 (organizer)
- 2016 Behind Japanese IaaS: infrastructure × software — CROSS 2016
- 2015 CoreOS OEM on NIFTY Cloud — CoreOS Meetup Tokyo #1
- 2014 Monitoring large-scale virtualization infrastructure with Zabbix — Zabbix Conference Japan 2014
- 2014 VyOS 1.1.0 and NIFTY Cloud New Features — VyOS Users Meeting Japan #2 (organizer)
- 2014 VyOS overview and demo — VyOS Users Meeting Japan #1 (organizer)
- 2014 Vyatta Core is now VyOS — JANOG34 LT
- 2014 VyOS — VYATTA USERS MEETING Spring 2014
- 2014 Using Vyatta on NIFTY Cloud — VYATTA USERS MEETING Spring 2014
- 2013 Monitoring virtual environments with Zabbix — Zabbix Conference Japan 2013
- 2013 Using Vyatta on NIFTY Cloud — VYATTA USERS MEETING Autumn 2013
- 2013 NIFTY Cloud Secure Network — VYATTA USERS MEETING Spring 2013
Most talks were given in Japanese; the titles are translated.