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root@bad-machine:~# ping 192.168.98.1
PING 192.168.98.1 (192.168.98.1) 56(84) bytes of data.
From 192.168.98.13 icmp_seq=1 Destination Host Unreachable
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root@good-machine:~# ping 192.168.98.1
PING 192.168.98.1 (192.168.98.1) 56(84) bytes of data.
64 bytes from 192.168.98.1: icmp_seq=1 ttl=64 time=7.01 ms
i have some VMs that i've been diagnosing after one of them failed (cannot ping the other machines / host on the host only adapter), but I can't seem to find any difference in routes / arp table / ...
I need to find the base cause without just restarting the guest network, because this is affecting me repeatedly.
Here are more (working / non working machine) examples:
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root@good-machine:~# ip route list
default via 10.0.2.2 dev enp0s3
10.0.2.0/24 dev enp0s3 proto kernel scope link src 10.0.2.15
10.32.0.0/24 dev cni0 proto kernel scope link src 10.32.0.1
10.32.1.0/24 via 10.32.1.0 dev flannel.1 onlink
10.32.2.0/24 via 10.32.2.0 dev flannel.1 onlink
10.128.0.0/24 dev enp0s8 proto kernel scope link src 10.128.0.1
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
192.168.98.0/24 dev enp0s8 proto kernel scope link src 192.168.98.11
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root@bad-machine:~# ip route list
default via 10.0.2.2 dev enp0s3
10.0.2.0/24 dev enp0s3 proto kernel scope link src 10.0.2.15
10.32.0.0/24 via 10.32.0.0 dev flannel.1 onlink
10.32.1.0/24 dev cni0 proto kernel scope link src 10.32.1.1
10.32.2.0/24 via 10.32.2.0 dev flannel.1 onlink
10.128.0.0/24 dev enp0s8 proto kernel scope link src 10.128.0.1
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
192.168.98.0/24 dev enp0s8 proto kernel scope link src 192.168.98.13
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root@good-machine:~# ifconfig enp0s8
enp0s8 Link encap:Ethernet HWaddr 08:00:27:05:54:46
inet addr:192.168.98.11 Bcast:192.168.98.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe05:5446/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:34461954 errors:0 dropped:862 overruns:0 frame:864
TX packets:41175528 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7455722396 (7.4 GB) TX bytes:9499873862 (9.4 GB)
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root@bad-machine:~# ifconfig enp0s8
enp0s8 Link encap:Ethernet HWaddr 08:00:27:cb:57:dd
inet addr:192.168.98.13 Bcast:192.168.98.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fecb:57dd/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:9000206 errors:0 dropped:0 overruns:0 frame:0
TX packets:372945 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:753919110 (753.9 MB) TX bytes:226178668 (226.1 MB)