![]() ![]() # This file describes the network interfaces available on your system Would it be helpful to disable kvm or remove br0/virbr0? (if so, how?)Īre there any logs I can provide? (copy/paste won't be helpful but maybe I can output to a file and get it onto a usb drive or something)ĭestination Gateway Genmask Flags Metric Ref Use Ifaceĭefault #.1 0.0.0.0 UG 0 0 0 eth0 Is there a recommended config I can try? Or a script/wizard that could automatically configure it? ![]() I would just reinstall the whole system, but I'm hesitant to do so since I had backed up so much stuff onto this machine before this happened.Ĭurrently I'm in the process of trying to set up an offline repository so I can attempt to get dhclient back, but in the meantime, what else can I do to troubleshoot this? I'm pretty sure br0 ad virbr0 showed up after I installed KVM. My interfaces are br0, eth0, lo and virbr0. I tried blacklisting ipv6 in /etc/modprobe.d/blacklist but still getting ipv6 addresses only. ![]() Routing tables had default routes pointing to the correct gateway for both eth0 and br0 (not sure whether br0 should be involved or not)Īs of the latest update, I'm no longer getting an ipv4 address despite having set a static one up in /etc/network/interfaces Not to mention I also stupidly removed dhcp-client (although dhclient wasn't helping before)ĭespite DNS no longer working, nf looks fine. DNS seemed to be still working (hostnames would resolve when pinging, but ping would fail), and I could ping internal machines with no problems.Īfter a bunch of troubleshoting, I also lost the ability to ping the gateway or any internal machines. Recently, on the Ubuntu Server, after a combination of trying to get KVM to work and also installing 2 additional ethernet cards (which have since been removed) I lost the ability to ping external IP addresses. This machine does not have a wireless card and is connected directly by ethernet cable to the router.Īll of the above machines have been configured in the router as having static IP addresses. I also have a machine running Ubuntu Server 10.04.2. All of these machines can connect to my router via wireless. On my network I have a bunch of machines running either Windows or some version of Ubuntu. I'm in a real mess, although one that might possibly have an easy fix. Yes, I agree this isn't very intuitive taken your expectation (and probable the expectation of most other users), but it makes more or less sense if you take into account how it works underneath (ARP resolution, routing etc.).Ok I've bee searching forums all day with no luck. This is, again in layman's terms, because after clearing the ARP table there will be no more MAC address associated with the IP address so the ping "can not be sent out". If you clear your ARP table ( arp -d * in Windows) and ping the device again you should get the Destination host unreachable message. You can test it by pinging a connected device on your LAN and unplugging the destination device while pinging is in progress. The output Request timed out will count as lost. This is the second misinterpretation, Reply from *.*.*.*: Destination host unreachable is not counted as lost but as received (after all it says " Reply from."). 18 since that device is unreachable therefore it couldn't give a reply. If you think about it, it can't be a reply from. if the destination devices is on the same subnet as the device doing the pinging) or from a router "responsible" for the destination's IP/subnet (if the destination device is on a different subnet and has to be routed). In layman's terms: The response ("from 192.168.1.199") comes either from the device doing the pinging (this occurs if no router is involved, e.g. Nothing gets "redirected", you are just misinterpreting the output of the ping command. OS: Windows 10 (other computers at home are running Windows 10 & 11).I put it here just in case it gives a hint. Also, I don't see the same problem from other computers at home. The problem appears to be irrelevant of which wireless AP I connect to. Reply from 192.168.1.199: Destination host unreachable. Minimum = 2ms, Maximum = 4ms, Average = 2ms Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Īpproximate round trip times in milli-seconds: Later on I found that pinging from that computer resulted in weird results: C:\>ping 192.168.1.8 One day, one of the computers failed to connect to the printer. I have a network printer at home, a NAS, and three computers. In short, what are the possible reasons that ping 192.168.1.18 will be redirected to 192.168.1.199 (or some other random IP addresses in 192.168.1.x)? ![]()
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