{"id":13577702,"url":"https://github.com/Esdenera/mcast-proxy","last_synced_at":"2025-04-05T12:31:05.650Z","repository":{"id":217504672,"uuid":"95687813","full_name":"Esdenera/mcast-proxy","owner":"Esdenera","description":"Multicast Proxy for OpenBSD","archived":false,"fork":false,"pushed_at":"2023-03-29T13:06:49.000Z","size":38,"stargazers_count":15,"open_issues_count":11,"forks_count":3,"subscribers_count":4,"default_branch":"master","last_synced_at":"2024-11-05T14:47:01.227Z","etag":null,"topics":["igmp","mld","multicast","openbsd","proxy"],"latest_commit_sha":null,"homepage":null,"language":"C","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"other","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/Esdenera.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE.md","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null}},"created_at":"2017-06-28T16:05:18.000Z","updated_at":"2024-04-25T01:16:58.000Z","dependencies_parsed_at":null,"dependency_job_id":"482f6e09-1020-4b10-b205-f152196524a4","html_url":"https://github.com/Esdenera/mcast-proxy","commit_stats":null,"previous_names":["esdenera/mcast-proxy"],"tags_count":1,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Esdenera%2Fmcast-proxy","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Esdenera%2Fmcast-proxy/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Esdenera%2Fmcast-proxy/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Esdenera%2Fmcast-proxy/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/Esdenera","download_url":"https://codeload.github.com/Esdenera/mcast-proxy/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":247338648,"owners_count":20922991,"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":["igmp","mld","multicast","openbsd","proxy"],"created_at":"2024-08-01T15:01:23.702Z","updated_at":"2025-04-05T12:31:00.641Z","avatar_url":"https://github.com/Esdenera.png","language":"C","funding_links":[],"categories":["C","Non-official OpenBSD websites"],"sub_categories":["Related projects"],"readme":"mcast-proxy\n===========\n\nAbout\n-----\n\nThis is a new daemon for OpenBSD that fills in a gap in the multicast\nprotocol support for network edges. More specifically we're talking\nabout a multicast proxy.\n\nThe mcast-proxy is a less featured multicast routing daemon that is\nmostly used on equipments that face client networks (end users). It is\nmainly used when you don't need a full multicast routing daemon (like\n[dvmrpd(8)](http://man.openbsd.org/dvmrpd.8),\n[mrouted(8)](http://man.openbsd.org/mrouted.8) or pim),\nbut you want to use your networks resources efficiently.\nThis implementation has the following features:\n\n* Support IPv4 (IGMPv1/v2) multicast proxy\n* Support IPv6 (MLDv1) multicast proxy\n* Privilege dropping (runs as user)\n* chroot jailing\n\nThe development of this daemon brought improvements to the IPv6\nmulticast stack, like:\n\n* Initial MP support\n  Now IPv6 multicast routing code uses the art routing table to store\n  the multicast routes. This also means you can see your multicast\n  routes in [route(8)](http://man.openbsd.org/route.8).\n* Support multiple rdomains\n  The interfaces mif (multicast interface) are now domain specific, so\n  you can have mif ids duplicated on different rdomains.\n* Fixed a few problems in MLD code that prevented some client/server\n  functionality\n\nNotes\n-----\n\n* The daemon is not yet pledge()d as there is no support for\n  MRT(6)_* setsockopt() calls.\n* IPv6 multicast proxy requires an OpenBSD -current, because of\n  the recent kernel changes and [netstat(1)](http://man.openbsd.org/netstat.1).\n\nRunning mcast-proxy\n-------------------\n\nTo run multicast routing protocols in your machines you have to configure\nthe following settings:\n\n* Allow multicast routing:\n\n        rcctl enable multicast\n\n* Allow IGMP packets (IPv4 only):\n  To allow IP options you have to configure your PF traffic pass rule to\n  accept IP options. Example: change 'pass' to 'pass allow-opts'.\n\n* Add a multicast route (if the default doesn't exist or is not correct)\n\n        route add 224/8 192.168.0.1\n        route add ff00::/8 fe80::fce1:baff:fed0:2001%vio1\n\n* In case you are using the default route for multicast you might need\n  to specify an alternate multicast source. By default mcast-proxy only\n  accepts multicast traffic from the same network of your interface.\n  For example em0 has IPv6 address: 2001:db8::100,\n  but the multicast traffic comes from 2001:db9::10. The same applies for IPv4.\n  The `mcast-proxy.conf`:\n\n        interface em0 {\n        \tsource 2001:db9::/64\n        \tupstream\n        }\n\nDesign\n------\n\nThe daemon code is split in the following file hierarchy:\n\n* [mcast-proxy.c](usr.sbin/mcast-proxy/mcast-proxy.c): all IGMP/MLD related packet parsing\n* [mrt.c](usr.sbin/mcast-proxy/mrt.c): the multicast routing table on userland\n* [kroute.c](usr.sbin/mcast-proxy/kroute.c): all kernel interactions\n* [util.c](usr.sbin/mcast-proxy/util.c): misc functions that did not fit the other files\n\nFurther Reading\n---------------\n\n* [mcast-proxy.8](mcast-proxy.md)\n* [mcast-proxy.conf.5](mcast-proxy.conf.md)\n* [License](LICENSE.md)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FEsdenera%2Fmcast-proxy","html_url":"https://awesome.ecosyste.ms/projects/github.com%2FEsdenera%2Fmcast-proxy","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FEsdenera%2Fmcast-proxy/lists"}