Hello, just starting chromium leads to a production of the following IP packets: ( tcpdump -l -e ether host 18:03:73:25:3b:b6 and dst 224.0.0.251 |tee dat )
11:17:26.587274 18:03:73:25:3b:b6 01:00:5e:00:00:fb ip 82: 224.0.0.251.mdns > 224.0.0.251.mdns: 0 PTR? _googlecast._tcp.local.(40) [ttl 1] 11:17:27.601780 18:03:73:25:3b:b6 01:00:5e:00:00:fb ip 82: 224.0.0.251.mdns > 224.0.0.251.mdns: 0 PTR? _googlecast._tcp.local.(40) [ttl 1] 11:17:29.612110 18:03:73:25:3b:b6 01:00:5e:00:00:fb ip 82: 224.0.0.251.mdns > 224.0.0.251.mdns: 0 PTR? _googlecast._tcp.local.(40) [ttl 1] It's Chromium Version 73.0.3683.86 (Official Build) (64-bit) distributed as a package in OpenBSD 6.5. Such packets, with the source address of 224.0.0.251.mdns, should never be produced. (RFC 1112, sec. 6.2: "The IP source address of the outgoing datagram must be one of the individual addresses corresponding to the outgoing interface.") Thanks. Best regards, Rudolf Sykora
