{"id":13814080,"url":"https://github.com/rapidloop/vlan-nats","last_synced_at":"2025-04-10T02:24:32.153Z","repository":{"id":95145070,"uuid":"99407376","full_name":"rapidloop/vlan-nats","owner":"rapidloop","description":"Virtual LAN over NATS","archived":false,"fork":false,"pushed_at":"2017-08-05T07:38:02.000Z","size":6,"stargazers_count":359,"open_issues_count":0,"forks_count":19,"subscribers_count":15,"default_branch":"master","last_synced_at":"2025-04-03T00:05:46.919Z","etag":null,"topics":["go","golang","nats","networking"],"latest_commit_sha":null,"homepage":null,"language":"Go","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/rapidloop.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null}},"created_at":"2017-08-05T07:37:40.000Z","updated_at":"2025-03-08T07:01:12.000Z","dependencies_parsed_at":"2023-05-26T23:30:10.363Z","dependency_job_id":null,"html_url":"https://github.com/rapidloop/vlan-nats","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rapidloop%2Fvlan-nats","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rapidloop%2Fvlan-nats/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rapidloop%2Fvlan-nats/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rapidloop%2Fvlan-nats/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/rapidloop","download_url":"https://codeload.github.com/rapidloop/vlan-nats/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":248143522,"owners_count":21054793,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["go","golang","nats","networking"],"created_at":"2024-08-04T04:01:42.430Z","updated_at":"2025-04-10T02:24:32.122Z","avatar_url":"https://github.com/rapidloop.png","language":"Go","readme":"\n# vlan-nats\n\n_Disclaimer: This is only a fun experiment. Do not use it for anything serious._\n\nvlan-nats creates a virtual LAN using [NATS](https://nats.io/). Backed by a NATS\nserver (or cluster), vlan-nats can create and run a network interface that is\nconnected to a virtual L2 switch.\n\nvlan-nats is written in entirely in Go. Currently, it works only on Linux.\nMulticast is not supported.\n\nFirst, get and build vlan-nats:\n\n```\n$ go get github.com/rapidloop/vlan-nats\n```\n\nThen, on each machine, do:\n\n```\nsudo vlan-nats -n nats://{MY-NATS-SERVER}:4222 \u0026\nsudo ip addr add 10.1.0.{CHANGEME} broadcast 10.1.255.255 dev vnats0\nsudo ip link set vnats0 up\nsudo ip route add 10.1.0.0/16 dev vnats0\n```\n\nYou should replace `{CHANGEME}` with a unique number. The `{MY-NATS-SERVER}` is\nthe IP or host of a reachable NATS server (all machines must connect to the same\nNATS cluster).\n\nCongratulations! You now have all your machines reachable on the virtual subnet\n10.1.0.0/16. You should be able to ping each other:\n\n```\n$ ip a show vnats0\n7: vnats0: \u003cBROADCAST,MULTICAST,UP,LOWER_UP\u003e mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000\n    link/ether 7e:8f:d4:17:2b:0c brd ff:ff:ff:ff:ff:ff\n    inet 10.1.0.1/32 brd 10.1.255.255 scope global vnats0\n       valid_lft forever preferred_lft forever\n    inet6 fe80::7c8f:d4ff:fe17:2b0c/64 scope link tentative dadfailed\n       valid_lft forever preferred_lft forever\n$ ping 10.1.0.2\nPING 10.1.0.2 (10.1.0.2) 56(84) bytes of data.\n64 bytes from 10.1.0.2: icmp_seq=1 ttl=64 time=1.70 ms\n64 bytes from 10.1.0.2: icmp_seq=2 ttl=64 time=1.60 ms\n^C\n--- 10.1.0.2 ping statistics ---\n2 packets transmitted, 2 received, 0% packet loss, time 1003ms\nrtt min/avg/max/mdev = 1.603/1.654/1.706/0.065 ms\n$\n```\n\nCool!\n\nTo cleanup, just `sudo pkill vlan-nats`. The interface is not persisted.\n\n### How It Works\n\nvlan-nats creates a TAP interface. All broadcast frames from the interface are\npublished to the NATS topic `vlan.{ID}` and unicast frames are published to\n`vlan.{ID}.{DST_ETHADDR}`. The process subscribes to `vlan.{ID}` and\n`vlan.{ID}.{OWN_ETHADDR}` and writes out any received frames into the TAP\ninterface.\n\nWindows and OS X do not natively support TAP devices, but (free) 3rd party\ndrivers are available.\n\n### Things To Try Out\n\n* Windows and OS X can be supported with 3rd party TAP drivers.\n* Run a DHCP server instead of assigning static IPs.\n* Use a TLS-enabled, authenticated, public NATS server -- like a VPN!\n\n\n","funding_links":[],"categories":["Go"],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frapidloop%2Fvlan-nats","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Frapidloop%2Fvlan-nats","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frapidloop%2Fvlan-nats/lists"}