To: ~alpine/users@lists.alpinelinux.org
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From: donoban <donoban@riseup.net>
Subject: Re: Orig eth0 was bridged, changed to NAT, but dhcp not working
Message-ID: <229c8ae0-9566-3fad-e5b9-b63173847b98@riseup.net>
Date: Sun, 21 Feb 2021 13:09:50 +0100
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From: donoban <donoban@riseup.net>
To: ~alpine/users@lists.alpinelinux.org
Message-ID: <229c8ae0-9566-3fad-e5b9-b63173847b98@riseup.net>
Subject: Re: Orig eth0 was bridged, changed to NAT, but dhcp not working
References: <CALODqpr-W+K0Kt+opc-sX8DV5EFgFyZBd_mt6Ea7dZ9M2oEO6g@mail.gmail.com>
In-Reply-To: <CALODqpr-W+K0Kt+opc-sX8DV5EFgFyZBd_mt6Ea7dZ9M2oEO6g@mail.gmail.com>

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Hi,

On 2/21/21 10:18 AM, Banibrata Dutta wrote:
> Have Alpine 3.13 installed in an Oracle Virtualbox VM as a guestOS. It
> was originally setup with a single bridged LAN interface configured as
> eth0 with dhcp. However post installation, I had changed the interface
> settings to have eth0 setup with static-IP. The guestOS has a second
> interface (of type Host-Only, from Virtualbox standpoint) configured as=

> eth1, which I use to login to the VM.
>=20
> Later, I realized that from within this guestOS, I needed to access a
> VPN setup in the host, and read a FAQ indicating that in such cases,
> Virtualbox network type of NAT should be used. However, after I changed=

> the network type from bridged to NAT, and configured eth0 to take
> IP/config thru dhcp, I can no longer get an IP address assigned to eth0=
=2E=C2=A0

I don't think NAT is the right choice for connecting to a VPN server on
the host. Or do you mean to a remote VPN server?

When you said "configured as eth1, which I use to login to the VM.", did
you mean a ssh connection? If yes the same setup and interface that work
fine for the ssh connection should work too for a VPN connection (to the
host). The problem could be your host setup, =C2=BFis the VPN server
listening on that interface? =C2=BFdo you have some kind of firewall whic=
h
could be blocking INPUT connections to the host?

I will try to go back and restore direct communication between your Host
and guest.

NAT configuration is fine if you want to connect the Guest to the
Internet without manual routing configuration.


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