Hello all,
I am having issues getting my virtual network to work correctly. As of
current, I have set up a virtual network with virt-manager, using the
routed mode to forward network traffic. I have found guests can
see/ping themselves, the host's virtual IP and the host's real IP, but
nothing else. Guests fail to see any other device on the real network
or the internet.
My host is Arch Linux on Linux 4.2.5-1 with the VFIO kernel, and runs
a QEMU/KVM hypervisor. My main guest runs a new install of Windows 10,
with the virtio network interface.
I have only one virtual network configured, and no network interfaces
configured in virt-manager. Does anyone know why my VMs cannot see
anything other than themselves and the host?
My iptables rules (entirely set by libvirt):
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT udp -- anywhere anywhere udp dpt:domain
ACCEPT tcp -- anywhere anywhere tcp dpt:domain
ACCEPT udp -- anywhere anywhere udp dpt:bootps
ACCEPT tcp -- anywhere anywhere tcp dpt:bootps
Chain FORWARD (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere 192.168.100.0/24
ACCEPT all -- 192.168.100.0/24 anywhere
ACCEPT all -- anywhere anywhere
REJECT all -- anywhere anywhere
reject-with icmp-port-unreachable
REJECT all -- anywhere anywhere
reject-with icmp-port-unreachable
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
ACCEPT udp -- anywhere anywhere udp dpt:bootpc
Output of "brctl show"
bridge name bridge id STP enabled interfaces
virbr0 8000.52540012f3ab yes virbr0-nic
Output of "ip addr":
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp5s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
state UP group default qlen 1000
link/ether 90:2b:34:68:84:c0 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.8/24 brd 192.168.1.255 scope global enp5s0
valid_lft forever preferred_lft forever
inet6 fe80::922b:34ff:fe68:84c0/64 scope link
valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
state DOWN group default
link/ether 52:54:00:12:f3:ab brd ff:ff:ff:ff:ff:ff
inet 192.168.100.1/24 brd 192.168.100.255 scope global virbr0
valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master
virbr0 state DOWN group default qlen 500
link/ether 52:54:00:12:f3:ab brd ff:ff:ff:ff:ff:ff
Many Thanks,
Josh
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