timeouts on vtnet?

Is anyone else seeing timeouts on virtual interfaces? e.g.

Mar  7 15:00:27 george kernel: vtnet0: watchdog timeout on queue 0
Mar  7 15:00:45 george kernel: vtnet0: watchdog timeout on queue 0
Mar  7 15:03:22 george kernel: vtnet0: watchdog timeout on queue 0
Mar  7 15:05:30 george kernel: vtnet0: watchdog timeout on queue 0
Mar  7 15:06:17 george kernel: vtnet0: watchdog timeout on queue 0
Mar  7 15:07:06 george kernel: vtnet0: watchdog timeout on queue 0
Mar  7 15:08:04 george kernel: vtnet0: watchdog timeout on queue 0
Mar  7 15:09:20 george kernel: vtnet0: watchdog timeout on queue 0
Mar  7 15:10:53 george kernel: vtnet0: watchdog timeout on queue 0
Mar  7 15:12:08 george kernel: vtnet0: watchdog timeout on queue 0
Mar  7 15:13:03 george kernel: vtnet0: watchdog timeout on queue 0

This started happening sometime after commit 32beb3ae71cb which doesn't 
do this.

I don't have access to the VPS host but messages on the guest don't seem 
to report anything unusual (or different) ..

Mar  7 15:49:12 george kernel: CPU: Intel Xeon E312xx (Sandy Bridge, 
IBRS update) (2400.07-MHz K8-class CPU)
Mar  7 15:49:12 george kernel:   Origin="GenuineIntel"  Id=0x206a1 
Family=0x6  Model=0x2a  Stepping=1
Mar  7 15:49:12 george kernel: 
Features=0x1f83fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE,SSE2,SS,HTT>
Mar  7 15:49:12 george kernel: 
Features2=0x9fba2223<SSE3,PCLMULQDQ,VMX,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,HV>
Mar  7 15:49:12 george kernel:   AMD 
Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
Mar  7 15:49:12 george kernel:   AMD Features2=0x1<LAHF>
Mar  7 15:49:12 george kernel:   Structured Extended 
Features3=0x9c000400<MD_CLEAR,IBPB,STIBP,L1DFL,SSBD>
Mar  7 15:49:12 george kernel:   XSAVE Features=0x1<XSAVEOPT>
Mar  7 15:49:12 george kernel:   VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
Mar  7 15:50:36 george kernel: Hypervisor: Origin = "KVMKVMKVM"
Mar  7 15:50:36 george kernel: real memory  = 4294967296 (4096 MB)
Mar  7 15:50:36 george kernel: avail memory = 4128796672 (3937 MB)
Mar  7 15:50:36 george kernel: Event timer "LAPIC" quality 600
Mar  7 15:50:36 george kernel: ACPI APIC Table: <BOCHS  BXPC    >
Mar  7 15:50:36 george kernel: FreeBSD/SMP: Multiprocessor System 
Detected: 4 CPUs
Mar  7 15:50:36 george kernel: FreeBSD/SMP: 4 package(s) x 1 core(s)
Mar  7 15:50:36 george kernel: random: unblocking device.
Mar  7 15:50:36 george kernel: Security policy loaded: MAC/ntpd (mac_ntpd)
Mar  7 15:50:36 george kernel: ioapic0 <Version 1.1> irqs 0-23
Mar  7 15:50:36 george kernel: Launching APs: 1 2 3
Mar  7 15:50:36 george kernel: random: entropy device external interface
Mar  7 15:50:36 george kernel: kbd1 at kbdmux0
Mar  7 15:50:36 george kernel: efirtc0: <EFI Realtime Clock>
Mar  7 15:50:36 george kernel: efirtc0: registered as a time-of-day 
clock, resolution 1.000000s
Mar  7 15:50:36 george kernel: kvmclock0: <KVM paravirtual clock>
Mar  7 15:50:36 george kernel: Timecounter "kvmclock" frequency 
1000000000 Hz quality 975
Mar  7 15:50:36 george kernel: kvmclock0: registered as a time-of-day 
clock, resolution 0.000001s
Mar  7 15:50:36 george kernel: smbios0: <System Management BIOS> at 
iomem 0xbfbd0000-0xbfbd001e
Mar  7 15:50:36 george kernel: smbios0: Entry point: v2.1 (32-bit), 
Version: 2.8, BCD Revision: 2.8
Mar  7 15:50:36 george kernel: aesni0: 
<AES-CBC,AES-CCM,AES-GCM,AES-ICM,AES-XTS>
Mar  7 15:50:36 george kernel: acpi0: <BOCHS BXPC>

  [ .. snip .. ]

Mar  7 15:50:36 george kernel: vgapci0: <VGA-compatible display> mem 
0xc0000000-0xc0ffffff,0xc1042000-0xc1042fff at device 2.0 on pci0
Mar  7 15:50:36 george kernel: vgapci0: Boot video device
Mar  7 15:50:36 george kernel: virtio_pci0: <VirtIO PCI (legacy) Network 
adapter> port 0xc040-0xc05f mem 
0xc1041000-0xc1041fff,0x800000000-0x800003fff irq 11 at device 3.0 on pci0
Mar  7 15:50:36 george kernel: vtnet0: <VirtIO Networking Adapter> on 
virtio_pci0
Mar  7 15:50:36 george kernel: vtnet0: Ethernet address: 02:f0:9a:7d:6f:9b
Mar  7 15:50:36 george kernel: vtnet0: netmap queues/slots: TX 1/256, RX 
1/128
Mar  7 15:50:36 george kernel: 000.000083 [ 452] vtnet_netmap_attach 
   vtnet attached txq=1, txd=256 rxq=1, rxd=128
Mar  7 15:50:36 george kernel: virtio_pci1: <VirtIO PCI (legacy) Balloon 
adapter> port 0xc000-0xc03f mem 
0xc1040000-0xc1040fff,0x800004000-0x800007fff irq 11 at device 4.0 on pci0
Mar  7 15:50:36 george kernel: vtballoon0: <VirtIO Balloon Adapter> on 
virtio_pci1

imb@george:/home/imb> sysctl hw.vtnet
hw.vtnet.altq_disable: 0
hw.vtnet.lro_mbufq_depth: 0
hw.vtnet.lro_entry_count: 128
hw.vtnet.rx_process_limit: 1024
hw.vtnet.tso_maxlen: 65535
hw.vtnet.mq_max_pairs: 32
hw.vtnet.mq_disable: 0
hw.vtnet.lro_disable: 1
hw.vtnet.tso_disable: 0
hw.vtnet.fixup_needs_csum: 0
hw.vtnet.csum_disable: 0
imb@george:/home/imb> sysctl dev.vtnet.0
dev.vtnet.0.txq0.rescheduled: 0
dev.vtnet.0.txq0.tso: 63
dev.vtnet.0.txq0.csum: 271745
dev.vtnet.0.txq0.omcasts: 6
dev.vtnet.0.txq0.obytes: 84738631
dev.vtnet.0.txq0.opackets: 273595
dev.vtnet.0.rxq0.rescheduled: 0
dev.vtnet.0.rxq0.host_lro: 0
dev.vtnet.0.rxq0.csum_failed: 26
dev.vtnet.0.rxq0.csum: 665480
dev.vtnet.0.rxq0.ierrors: 0
dev.vtnet.0.rxq0.iqdrops: 0
dev.vtnet.0.rxq0.ibytes: 221502559
dev.vtnet.0.rxq0.ipackets: 683982
dev.vtnet.0.tx_task_rescheduled: 0
dev.vtnet.0.tx_tso_offloaded: 63
dev.vtnet.0.tx_csum_offloaded: 271746
dev.vtnet.0.tx_defrag_failed: 0
dev.vtnet.0.tx_defragged: 0
dev.vtnet.0.tx_tso_without_csum: 0
dev.vtnet.0.tx_tso_not_tcp: 0
dev.vtnet.0.tx_csum_proto_mismatch: 0
dev.vtnet.0.tx_csum_unknown_ethtype: 0
dev.vtnet.0.rx_task_rescheduled: 0
dev.vtnet.0.rx_csum_offloaded: 665480
dev.vtnet.0.rx_csum_failed: 26
dev.vtnet.0.rx_csum_inaccessible_ipproto: 0
dev.vtnet.0.rx_csum_bad_offset: 0
dev.vtnet.0.rx_csum_bad_ipproto: 26
dev.vtnet.0.rx_csum_bad_ethtype: 0
dev.vtnet.0.rx_mergeable_failed: 0
dev.vtnet.0.rx_enq_replacement_failed: 0
dev.vtnet.0.rx_frame_too_large: 0
dev.vtnet.0.mbuf_alloc_failed: 0
dev.vtnet.0.flags: 
4cfe<MAC,CTRL_VQ,CTRL_RX,CTRL_MAC,VLAN_FILTER,TSO_ECN,MRG_RXBUFS,INDIRECT,EVENT_IDX,SW_LRO>
dev.vtnet.0.features: 
3087b867<CSUM,GUEST_CSUM,CTRL_GUEST_OFFLOADS,MAC,GSO,HOST_TSO4,HOST_TSO6,HOST_ECN,MRG_RXBUF,STATUS,CTRL_VQ,CTRL_RX,CTRL_MAC_ADDR>
dev.vtnet.0.act_vq_pairs: 1
dev.vtnet.0.req_vq_pairs: 1
dev.vtnet.0.max_vq_pairs: 1
dev.vtnet.0.%iommu:
dev.vtnet.0.%parent: virtio_pci0
dev.vtnet.0.%pnpinfo: vendor=0x00001af4 device=0x1000 subvendor=0x1af4 
device_type=0x00000001
dev.vtnet.0.%location:
dev.vtnet.0.%driver: vtnet
dev.vtnet.0.%desc: VirtIO Networking Adapter