kvm unhandled rdmsr - DNS resolution fails

I have a VM host running Ubuntu 14.04.2 LTS, and several VMs running 15.04.

On the host, I found these:

Aug 13 07:47:04 hkgdcsrv01 kernel: [1804566.706973] kvm [21590]: vcpu1 unhandled rdmsr: 0x606
Aug 13 07:47:05 hkgdcsrv01 kernel: [1804567.776637] kvm [21590]: vcpu0 unhandled rdmsr: 0x611
Aug 13 07:47:05 hkgdcsrv01 kernel: [1804567.784732] kvm [21590]: vcpu0 unhandled rdmsr: 0x639
Aug 13 07:47:05 hkgdcsrv01 kernel: [1804567.792692] kvm [21590]: vcpu0 unhandled rdmsr: 0x641
Aug 13 07:47:05 hkgdcsrv01 kernel: [1804567.800670] kvm [21590]: vcpu0 unhandled rdmsr: 0x619

On the VM, I found this one:

[ 1.657384] intel_rapl: no valid rapl domains found in package 0
[ 1.921566] ifquery[350]: segfault at 1 ip 00000000004031c8 sp 00007fffd4fa8570 error 4 in ifup[400000+d000]

Symptoms:

- I can ping my LAN and the world
- I can ping the DNS that is listed in /etc/resolv.conf
- I can *not* get names resolved against that DNS from this VM
- there is no firewall in between

After rebooting the host, everything is back to normal.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: qemu-system-x86 2.0.0+dfsg-2ubuntu1.15
ProcVersionSignature: Ubuntu 3.16.0-43.58~14.04.1-generic 3.16.7-ckt13
Uname: Linux 3.16.0-43-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
Date: Thu Aug 13 07:51:43 2015
InstallationDate: Installed on 2015-07-06 (38 days ago)
InstallationMedia: Ubuntu-Server 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: qemu
UpgradeStatus: No upgrade log present (probably fresh install)