Network unreachable in bhyve

Mon Sep 12 12:49:46 UTC 2016

On 12/09/2016 12:21, Grzegorz Junka wrote:
> I am following the official guide:
>
> https://www.freebsd.org/doc/handbook/virtualization-host-bhyve.html
>
> After installing Centos6 and starting the guest there is no network 
> inside the VM:
>
> [root at localhost ~]# ping 8.8.8.8
> connect: Network is unreachable
> [root at localhost ~]# ifconfig
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           inet6 addr: ::1/128 Scope:Host
>           UP LOOPBACK RUNNING  MTU:65536  Metric:1
>           RX packets:4 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:260 (260.0 b)  TX bytes:260 (260.0 b)
>
> On the host:
>
> root at ultrabook:~ # ifconfig
> ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 
> 2290
>         ether 74:2f:68:cb:d6:2a
>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>         media: IEEE 802.11 Wireless Ethernet autoselect mode 11ng
>         status: associated
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
> options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
>         inet6 ::1 prefixlen 128
>         inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
>         inet 127.0.0.1 netmask 0xff000000
>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
> bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 
> mtu 1500
>         ether 02:6c:a7:69:c7:00
>         nd6 options=9<PERFORMNUD,IFDISABLED>
>         id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
>         maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
>         root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
>         member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
>                 ifmaxaddr 0 port 4 priority 128 path cost 2000000
>         member: wlan0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
>                 ifmaxaddr 0 port 5 priority 128 path cost 66666
> tap0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> 
> metric 0 mtu 1500
>         options=80000<LINKSTATE>
>         ether 00:bd:b1:16:00:00
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>         media: Ethernet autoselect
>         status: active
>         Opened by PID 1918
> wlan0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> 
> metric 0 mtu 1500
>         ether 74:2f:68:cb:d6:2a
>         inet 192.168.8.101 netmask 0xffffff00 broadcast 192.168.8.255
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>         media: IEEE 802.11 Wireless Ethernet MCS mode 11ng
>         status: associated
>         ssid HUAWEI-7DC4 channel 1 (2412 MHz 11g ht/20) bssid 
> 94:fe:22:5c:7d:c4
>         regdomain 96 indoor ecm authmode WPA2/802.11i privacy ON
>         deftxkey UNDEF AES-CCM 2:128-bit txpower 20 bmiss 7 scanvalid 60
>         protmode CTS ampdulimit 64k ampdudensity 8 shortgi wme burst
>         roaming MANUAL
>
> I am using the following commands to load the kernel:
>
>   grub-bhyve -m device.map -r hd0,msdos1 -M 2048 centos
>   ls (hd0,msdos1)/
>   linux (hd0,msdos1)/vmlinuz-2.6.32-642.el6.x86_64 
> root=/dev/mapper/VolGroup-lv_root
>   initrd (hd0,msdos1)/initramfs-2.6.32-642.el6.x86_64.img
>   boot
>
> and start the guest:
>
>   bhyve -c 4 -m 2048M -A -H -P \
>      -s 0:0,hostbridge \
>      -s 1:0,lpc \
>      -s 2:0,virtio-net,tap0 \
>      -s 3:0,virtio-blk,/dev/zvol/tank4/centos6v \
>      -l com1,stdio \
>      centos
>
> The following has been added to /etc/rc.conf:
>
> cloned_interfaces="bridge0 tap0"
> ifconfig_bridge0="addm wlan0 addm tap0"
>
> /boot/loader.conf
>
> vmm_load="YES"
> nmdm_load="YES"
> if_bridge_load="YES"
> if_tap_load="YES"
>
> What I am missing?
>
> Grzegorz
>

I tried to set up the network following this guide:

http://www.krizna.com/centos/how-to-setup-network-in-centos-6/

The dhcp option didn't work (can't obtain the IP). When assigning the IP 
statically the network can be started but then only the host is visible. 
Neither the DNS nor the gateway are visible:

[root at localhost network-scripts]# pwd
/etc/sysconfig/network-scripts
[root at localhost network-scripts]# cat ifcfg-eth0
DEVICE=eth0
HWADDR=00:A0:98:54:5C:86
TYPE=Ethernet
UUID=d8a635d0-dd47-4d50-ba34-63076ba00775
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO="static"
IPADDR=192.168.8.120
NETMASK=255.255.255.0
GATEWAY=192.168.8.1
DNS1=8.8.8.8
DNS2=4.2.2.2

[root at localhost network-scripts]# ping 192.168.8.101
PING 192.168.8.101 (192.168.8.101) 56(84) bytes of data.
64 bytes from 192.168.8.101: icmp_seq=1 ttl=64 time=0.450 ms
64 bytes from 192.168.8.101: icmp_seq=2 ttl=64 time=0.197 ms

--- 192.168.8.101 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1640ms
rtt min/avg/max/mdev = 0.197/0.323/0.450/0.127 ms
[root at localhost network-scripts]# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
 From 192.168.8.120 icmp_seq=1 Destination Host Unreachable
 From 192.168.8.120 icmp_seq=2 Destination Host Unreachable
 From 192.168.8.120 icmp_seq=3 Destination Host Unreachable

--- 8.8.8.8 ping statistics ---
4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3341ms
pipe 3
[root at localhost network-scripts]# ping 192.168.8.1
PING 192.168.8.1 (192.168.8.1) 56(84) bytes of data.
 From 192.168.8.120 icmp_seq=1 Destination Host Unreachable
 From 192.168.8.120 icmp_seq=2 Destination Host Unreachable
 From 192.168.8.120 icmp_seq=3 Destination Host Unreachable

--- 192.168.8.1 ping statistics ---
4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3395ms
pipe 3

Am I missing some additional setting on the host?

Grzegorz