full image - Repost: Reserved IP address in the firewall logs (from Reddit.com, Reserved IP address in the firewall logs)
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I keep seeing this entry in my firewall log (in the context of torrenting) and I could do with some help understanding why it is occuring.2025-08-24 22:40:34inforouter.example.com: BAD_DST_IPV4 prerouting: in:vlan65-vlanname out:(unknown 0), connection-state:invalid src-mac 00:0c:29:a9:45:43, proto TCP (SYN), 10.45.65.254:54606->0.0.1.146:43550, len 60In one respect it is very easy to understand what is happening. The destination address 0.0.1.146 matches a range of IP addresses covered by the list BAD_DST_IPV4 and thus the firewall drops it.But the question I have for people is about this IP address. A trivial google search tells me this address is a reserved address. So why does it keep showing up in the logs? If it isn't routable on the internet why does it keep being well, routed?Reserved and special use addresses: - Current network (only valid as source address) RFC 1700Reserved and special use addresses:0.0.0.0/8 - Current network (only valid as source address) RFC 1700
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