omcproxy/src, branch master

querier: include older queriers in the election

2026-10-28T16:08:52Z

IGMPv1/v2 and MLDv1 queriers were ignored in the election, so two queriers stayed active on a link with an older router. An older query carries no robustness or query interval, so it only takes over the query role. Queries from 0.0.0.0 or ::, which snooping switches send (RFC 4541 2.1.1), stay out of the election. Link: https://github.com/openwrt/omcproxy/pull/28 Signed-off-by: John Crispin

proxy: add the altnet option

2026-10-28T16:08:52Z

altnet=, repeatable, limits the routed sources of a proxy to these networks. An address family without networks routes every source. Link: https://github.com/openwrt/omcproxy/pull/28 Signed-off-by: John Crispin

proxy: add the fast_leave option

2026-10-28T16:08:52Z

With fast_leave, a leave ends the group or source at once instead of after the last member query time. The group specific queries still go out, so other members on the link report again. Link: https://github.com/openwrt/omcproxy/pull/28 Signed-off-by: John Crispin

proxy: add querier settings options

2026-10-28T16:08:52Z

Add the proxy options robustness=, query_interval= (seconds), query_response_interval= and last_member_query_interval= (tenths of a second). They set the querier of the downlinks. Keep the settings per address family, so that each family gets its own settings back when another querier goes away. Link: https://github.com/openwrt/omcproxy/pull/28 Signed-off-by: John Crispin

proxy: update the routes of a group when its members change

2026-10-28T16:08:52Z

The outgoing interfaces of a multicast route are set only when the kernel reports a new source. A host that joined a group whose source was already known got no traffic until the route expired after MRIB_DEFAULT_LIFETIME (125 s), and a leave kept the traffic flowing for as long. proxy_trigger() now updates the outgoing interfaces of the known routes of the group in place, so a join or leave takes effect at once and the forwarding has no gap. Link: https://github.com/openwrt/omcproxy/pull/28 Signed-off-by: John Crispin

mld: change addrbuf size for IPv6 address handling

2026-10-28T16:08:52Z

addrbuf in mld_handle() holds an IPv6 address but had INET_ADDRSTRLEN (16) bytes. inet_ntop() fails for longer addresses, and the log message about another querier then printed an uninitialised buffer. Signed-off-by: Neil Kettle Link: https://github.com/openwrt/omcproxy/pull/24 Signed-off-by: John Crispin

mrib: save iface->ifindex before zero'ing

2026-10-28T16:08:52Z

mrib_clean_iface() set iface->ifindex to 0 before it used it, so the IP_DROP_MEMBERSHIP and IPV6_DROP_MEMBERSHIP calls ran with ifindex 0 and the all-routers memberships of the interface were not dropped. Signed-off-by: Neil Kettle Link: https://github.com/openwrt/omcproxy/pull/24 Signed-off-by: John Crispin

client: handle socket creation error by closing igmp_fd

2026-10-28T16:08:52Z

client_init() leaked igmp_fd when the MLD socket could not be created. Signed-off-by: Neil Kettle Link: https://github.com/openwrt/omcproxy/pull/24 Signed-off-by: John Crispin

igmp: fix source count increment in IGMP query

2026-10-28T16:08:52Z

igmp_send_query() never incremented cnt, so a group-and-source-specific query went out without sources. Signed-off-by: Neil Kettle Link: https://github.com/openwrt/omcproxy/pull/24 Signed-off-by: John Crispin

mrib: receive_mrt: workaround for RTL8373 queries

2026-03-07T14:22:25Z

Fixes the following warning caused by RTL8373 sending IGMP queries without including the mandatory IPv4 Router Alert option: mrib_receive_mrt: ignoring invalid IGMP-message of type 11 from on According to RFC3376 9.1 [1]: - Hosts SHOULD ignore v2 or v3 Queries without the Router-Alert option. However, we can add an exception to be compatible with non-compliant switches. [1] https://datatracker.ietf.org/doc/html/rfc3376#section-9.1 Link: https://github.com/openwrt/omcproxy/pull/23 Signed-off-by: Álvaro Fernández Rojas