Proxmox 5, Guest host stops receiving packets.

mackpaul1967

Renowned Member
Mar 9, 2011
18
1
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I did a clean install of Proxmox 5 after having the same issue with in-place upgrade from 4.4 to 5. This single PVE box has been running for more than two years without issue. I have two Psfense VM's running in a HA configuration. I do this so I can upgrade pfsense with out network downtime and have been doing so without issue since Proxmox 2.

Basic info --- PVE 5.0, local thin zfs, OVS bridge, and intel 1000e guest interfaces. This is the same when running PVE 4.4 with no issues.

After a while on the master Pfsense VM, I loose internet connection. While one of the Pfsense guest VM's is a failed state. I did some trouble shooting and found that on the tap interface for the VM, I see ARP requests and ARP replies packets for that guest VM, however, on guest interface I only see ARP request packets no ARP replies.

root@pve01:~# tcpdump -i tap103i1 -nn arp
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on tap103i1, link-type EN10MB (Ethernet), capture size 262144 bytes
16:23:16.722411 ARP, Request who-has 192.168.0.1 tell 192.168.0.2, length 28
16:23:16.723107 ARP, Reply 192.168.0.1 is-at 90:0d:cb:8c:66:d0, length 46
16:23:17.787116 ARP, Request who-has 192.168.0.1 tell 192.168.0.2, length 28
16:23:17.787809 ARP, Reply 192.168.0.1 is-at 90:0d:cb:8c:66:d0, length 46
16:23:18.851856 ARP, Request who-has 192.168.0.1 tell 192.168.0.2, length 28
16:23:18.852667 ARP, Reply 192.168.0.1 is-at 90:0d:cb:8c:66:d0, length 46

[2.3.4-RELEASE][admin@pfsense01.7lsi.local]/root: tcpdump -i em1 -nn arp
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on em1, link-type EN10MB (Ethernet), capture size 65535 bytes
16:23:16.075908 ARP, Request who-has 192.168.0.1 tell 192.168.0.2, length 28
16:23:17.140658 ARP, Request who-has 192.168.0.1 tell 192.168.0.2, length 28
16:23:18.205511 ARP, Request who-has 192.168.0.1 tell 192.168.0.2, length 28


Any thoughts?

Paul...
 
Update:

I have switched to the virtio drivers, this is what I wanted anyways. I had an issue in the past with virtio and FreeBSD throughput. I solved that issue and the have not had any issues with the interface not receiving packets.

Paul...