3/9/2024 0 Comments Ping loopback packet info![]() If you're only working on localhost it's going to be fine. The problem is that on occasions some packets may be classified as inbound packets, even if the destination IP isn't of your computer. Inbound packet capturing is not working all the time.Īs previously noted, loopback inbound packets can't be reinjected.But it would be easier to just keep this in mind and be careful when setting the parameters. You can work around it by specify destination port and things like this. When you ping localhost, it would be a lag of 1000ms. A simple example is that when filter is simply "outbound", and apply a lag of 500ms. So clumsy will process them twice: first time is when sending, and second time when receiving. Since we don't have inbound loopback packets, all loopback packets are considered as outbound. These are also considered loopback packets. It's important to know that your computer may have IPs other than 127.0.0.1, like an intranet IP allocated by your router. The thing to remember is that when you're processing on loopback packets, you can't have "inbound" in your filter. In fact the underlying Windows Filtering Platform seems to classify all loopback packets as outbound. When you think about it, it's really difficult to tell it's an inbound or outbound packets when you're sending packets from the computer to itself. Loopback inbound packets can't be captured or reinjected.So here's a list of limitations that you should be aware of before using clumsy. There's some issues with no easy workaround found. Reinjecting packets: after we captured the packets, we need to let them of again so your application can get it. ![]() So when your applicatioon is sending/receiving a packet, clumsy would capture it. Capturing packets: clumsy needs to intercept the packets from your application so it can process it.This is done by provide a filter to specify which IP, protocol, or other criterias. Filtering: you often want to select a subset of interested network packets for clumsy to process.Outbound packets: packets send out from your computer.It can be from somewhere else and also from your computer. Inbound packets: packets send in to your computer.Loopback packets: packets send from localhost (ie 127.0.0.1) to localhost.I hope that helps! Please let us know if there's anything else you'd like a hand with.Here're a list of terminalogies that would be repeatly used on this page. ![]() Trace to your loopback address (127.0.0.1). In Windows, run Command Line as administrator and type **ipconfig** and look for the IPv4 address this is your NIC IP. If on the other hand the problem is local, I'd recommend using PingPlotter to troubleshoot your NIC (Network Interface Card) as well as your loopback address (IP Stack and hardware): Here's an article which outlines some great information about bringing a case to your ISP:Īs with a lot of Tier 1 support, you may need to be that "squeaky wheel" for a bit in order for them to address the problem seriously To ensure the problem isn't local, I'd recommend tracing to 192.168.1.1 for a period of time to ensure the spikes don't start at your router (and you can use this data to convince your ISP the issue is not on your end). However, hop #1 is down-prioritizing ICMP TTL Expired packets (which doesn't affect your connection) which is sort-of masking any results on your local network. You've definitely captured a problem here, which seems to be starting at hop #2 (which looks to be your ISP gateway). Thanks for getting in touch with us! I'm happy to offer some wisdom here.
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