[vbox-dev] Odd networking issue with VirtuaBox

[Maarten Hoes]

Hi,


Thanks.

'ping -6 www.google.com' from a command prompt on the Windows host os works
as expected, but 'ping6 www.google.com' from within the CentOS guest vm
gets no response.

Here is the routing tables (output of 'ip -4/-6 route) of the CentOS guest:

# ip -4 route
default via 192.168.178.1 dev enp0s3
169.254.0.0/16 dev enp0s3  scope link  metric 1002
192.168.178.0/24 dev enp0s3  proto kernel  scope link  src 192.168.178.33

# ip -6 route
unreachable ::/96 dev lo  metric 1024  error -101
unreachable ::ffff:0.0.0.0/96 dev lo  metric 1024  error -101
2001:980:ed37:1::/64 dev enp0s3  proto kernel  metric 256  expires 6200sec
unreachable 2002:a00::/24 dev lo  metric 1024  error -101
unreachable 2002:7f00::/24 dev lo  metric 1024  error -101
unreachable 2002:a9fe::/32 dev lo  metric 1024  error -101
unreachable 2002:ac10::/28 dev lo  metric 1024  error -101
unreachable 2002:c0a8::/32 dev lo  metric 1024  error -101
unreachable 2002:e000::/19 dev lo  metric 1024  error -101
unreachable 3ffe:ffff::/32 dev lo  metric 1024  error -101
fe80::/64 dev enp0s3  proto kernel  metric 256
default via fe80::2665:11ff:feed:e8d1 dev enp0s3  proto ra  metric 1024
expires 1371sec




- Maarten



On Wed, Jun 17, 2015 at 9:59 AM, Aleksey Ilyushin <
aleksey.ilyushin at oracle.com> wrote:

> Hi,
>
> First you need to rule out host/router/provider issues. Try ‘ping -6
> www.google.com’ on the host.
>
> Aleksey
>
> On 17 Jun 2015, at 09:44, Maarten Hoes <hoes.maarten at gmail.com> wrote:
>
> Hi,
>
>
> Thanks. Disabling ipv6 in the guest solves the issue.
>
> Still, I dont understand why ipv6 shouldnt work ? My host os has both an
> ipv4 address and an ipv6 address, provided by DHCP with my internet
> provider's 'modem' (which has ipv4 and ipv6 access to the internet). In
> theory at least it should work, so I would still like to investigate
> further if anyone has any further suggestions.
>
> Anyway, thanks for all the kind help by all.
>
>
> - Maarten
>
>
>
> On Tue, Jun 16, 2015 at 9:51 PM, Aleksey Ilyushin <
> aleksey.ilyushin at oracle.com> wrote:
>
>> Hi,
>>
>> It looks like the guest tries to reach www.google.com via IPv6 and never
>> receives any replies. The problem may happen to be irrelevant to
>> VirtualBox. Try disabling IPv6 in the guest.
>>
>> Aleksey
>>
>> On 16 Jun 2015, at 19:55, Maarten Hoes <hoes.maarten at gmail.com> wrote:
>>
>> Hi,
>>
>>
>> I attached the gzipped capture to this message
>>>
>> At least I meant to, but seem to have forgotten. Here we go, attachment
>> included this time.
>>
>>
>> - Maarten
>>
>> <virtuaboxnic1.pcap.gz>_______________________________________________
>> vbox-dev mailing list
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>>
>>
>>
>
>
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