Vagrant / Virtualbox / host-only / can't access host (ping from guest)

Wolfgang Klinger

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Jan 4, 2016, 5:19:27 AM1/4/16

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Hi,

I tried it with different boxes, always the same, I can't ping the host.

ping to the outside world via NAT works, but not on the host-only adapter.

this is my Vagrantfile:

----

# -*- mode: ruby -*-

# vi: set ft=ruby :

Vagrant.configure("2") do |config|

config.vm.box = "scotch/box"

config.vm.network "private_network", ip: "192.168.33.10"

config.vm.hostname = "scotchbox"

config.vm.synced_folder ".", "/var/www", :mount_options => ["dmode=777", "fmode=666"]

config.vm.provider "virtualbox" do |v|

v.customize ["modifyvm", :id, "--cpuexecutioncap", "80"]

v.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]

v.gui = false

v.memory = "2048"

v.cpus = 2

end

-----

Adapter 1 = NAT

Adapter 2 = host-only (vboxnet0, IP: 192.168.33.10)

----- guest:

eth1 Link encap:Ethernet HWaddr 08:00:27:0c:f4:d3

inet addr:192.168.33.10 Bcast:192.168.33.255 Mask:255.255.255.0

inet6 addr: fe80::a00:27ff:fe0c:f4d3/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:1 errors:0 dropped:0 overruns:0 frame:0

TX packets:20 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:215 (215.0 B) TX bytes:1844 (1.8 KB)

----- host:

vboxnet0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500

ether 0a:00:27:00:00:00

inet 192.168.33.1 netmask 0xffffff00 broadcast 192.168.33.255

------ guest:

vagrant@scotchbox:~$ ping 192.168.33.1

PING 192.168.33.1 (192.168.33.1) 56(84) bytes of data.

^C

--- 192.168.33.1 ping statistics ---

5 packets transmitted, 0 received, 100% packet loss, time 4032ms

vagrant@scotchbox:~$ ping www.google.at

PING www.google.at (64.15.113.181) 56(84) bytes of data.

64 bytes from 64.15.113.181: icmp_seq=1 ttl=63 time=34.1 ms

64 bytes from 64.15.113.181: icmp_seq=2 ttl=63 time=33.5 ms

------ guest:

vagrant@scotchbox:~$ arp

Address HWtype HWaddress Flags Mask Iface

10.0.2.3 ether 52:54:00:12:35:03 C eth0

10.0.2.2 ether 52:54:00:12:35:02 C eth0

192.168.33.1 ether 08:00:27:38:ca:5d C eth1

------

OSX 10.11.2 (15C50), Firewall OFF

Vagrant 1.8.1

VirtualBox 5.0.12 r104815

Any hints or help appreciated!

tia!

This worked before El Capitan.

Kind regards

Wolfgang Klinger

Alvaro Miranda Aguilera

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Jan 5, 2016, 3:20:46 AM1/5/16

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Hello There

in VirtualBox the host is available as 10.0.2.2

Below full output.

I copied and paste your line, just the line, and my Vagrant didn't like it.

Can you run "dos2unix Vagrantfile" just in case?

test 1 :

here is one that works:

Vagrant.configure(2) do |config|

config.vm.box = "cbednarski/ubuntu-1404"

config.vm.network "private_network", ip: "192.168.33.10"

end

If still doesn't work, please run this:

ifconfig 2>&1 | grep -B2 -i '192.168.33'

And using the VirtualBox gui -> preferences -> network -> host only network,. delete that interface and let Vagrant to create it again.

Full output:

root@ubuntu-1404-vbox:~# ping 10.0.2.2

PING 10.0.2.2 (10.0.2.2) 56(84) bytes of data.

64 bytes from 10.0.2.2: icmp_seq=1 ttl=63 time=0.165 ms

^C

--- 10.0.2.2 ping statistics ---

1 packets transmitted, 1 received, 0% packet loss, time 0ms

rtt min/avg/max/mdev = 0.165/0.165/0.165/0.000 ms

root@ubuntu-1404-vbox:~# ssh -XY kik...@10.0.2.2

The authenticity of host '10.0.2.2 (10.0.2.2)' can't be established.

ECDSA key fingerprint is e4:29:24:62:83:c2:22:99:38:e0:a0:63:f5:17:db:d4.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '10.0.2.2' (ECDSA) to the list of known hosts.

Password:

mini:~ kikitux$

Added the network ip, and works for me:

mini:ubuntu1404 kikitux$ vagrant ssh -c "sudo su -"

root@ubuntu-1404-vbox:~# ifconfig eth1

eth1 Link encap:Ethernet HWaddr 08:00:27:5b:04:72

inet addr:192.168.33.10 Bcast:192.168.33.255 Mask:255.255.255.0

inet6 addr: fe80::a00:27ff:fe5b:472/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:1 errors:0 dropped:0 overruns:0 frame:0

TX packets:17 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:231 (231.0 B) TX bytes:1526 (1.5 KB)

root@ubuntu-1404-vbox:~# ping 192.168.33.1

PING 192.168.33.1 (192.168.33.1) 56(84) bytes of data.

64 bytes from 192.168.33.1: icmp_seq=1 ttl=64 time=0.577 ms

64 bytes from 192.168.33.1: icmp_seq=2 ttl=64 time=0.466 ms

^C

--- 192.168.33.1 ping statistics ---

2 packets transmitted, 2 received, 0% packet loss, time 1001ms

rtt min/avg/max/mdev = 0.466/0.521/0.577/0.060 ms

root@ubuntu-1404-vbox:~# ssh kik...@192.168.33.1

The authenticity of host '192.168.33.1 (192.168.33.1)' can't be established.

ECDSA key fingerprint is e4:29:24:62:83:c2:22:99:38:e0:a0:63:f5:17:db:d4.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '192.168.33.1' (ECDSA) to the list of known hosts.

Password:

mini:~ kikitux$

Thanks

Alvaro

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Wolfgang Klinger

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Jan 7, 2016, 3:47:10 AM1/7/16

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Hello,

thanks for your reply, but I don't know where the solution is.

I already tried many different boxes. That problem must be somewhere else.

----- guest:

# ifconfig 2>&1 | grep -B2 -i '192.168.42'

eth1 Link encap:Ethernet HWaddr 08:00:27:27:81:95

inet addr:192.168.42.42 Bcast:192.168.42.255 Mask:255.255.255.0

# arp

Address HWtype HWaddress Flags Mask Iface

192.168.42.1 ether 0a:00:27:00:00:02 C eth1

10.0.2.3 ether 52:54:00:12:35:03 C eth0

10.0.2.2 ether 52:54:00:12:35:02 C eth0

----- host:

# ifconfig 2>&1 | grep -B2 -i '192.168.42'

vboxnet2: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500

ether 0a:00:27:00:00:02

inet 192.168.42.1 netmask 0xffffff00 broadcast 192.168.42.255

# arp -i vboxnet2 -l -a

Neighbor Linklayer Address Expire(O) Expire(I) Netif Refs Prbs

192.168.42.42 8:0:27:27:81:95 expired expired vboxnet2 1

192.168.42.255 (incomplete) (none) (none) vboxnet2

Any idea how I can debug this connection problems within the guest (e.g. Debian)?

Any logs I can take a look?

tia,

kind regards

Wolfgang

Alvaro Miranda Aguilera

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Jan 8, 2016, 7:03:03 PM1/8/16

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Hello,

Did you try this Vagrantfile?

Vagrant.configure(2) do |config|

config.vm.box = "cbednarski/ubuntu-1404"

config.vm.network "private_network", ip: "192.168.33.10"

end

Can you share your Vagrantfile?

Thanks

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