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Date:      Thu, 22 Apr 2021 20:13:13 +0200
From:      Peter Blok <pblok@bsd4all.org>
To:        Ian Lepore <ian@freebsd.org>
Cc:        Daniel Dettlaff <dmilith@me.com>, freebsd-hackers@freebsd.org
Subject:   Re: 32-bit jail on 64-bit host
Message-ID:  <FC6126FF-99F0-46C1-8D0B-24676E5E155F@bsd4all.org>
In-Reply-To: <c56c59249fa4b8d2c6b0e3595d410270a9d0c383.camel@freebsd.org>
References:  <F9E8A7E3-C041-49C6-93E3-F44CB83A0858@bsd4all.org> <06CAF4FA-CBC1-4F89-9CA9-532A6B370E51@me.com> <c56c59249fa4b8d2c6b0e3595d410270a9d0c383.camel@freebsd.org>

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I tried to replace some of the 32-bit binaries before, but it started to =
require shared libs as well, so I stopped. I=E2=80=99ll give it a shot =
later.

I now run it with out vnet and it indeed works. I have managed to =
compile p5-DBD-Oracle which works now.

Because all of my other jails were vnet jails, I didn=E2=80=99t think =
about doing it the old way without vnet.

Peter

> On 22 Apr 2021, at 15:39, Ian Lepore <ian@freebsd.org> wrote:
>=20
> On Thu, 2021-04-22 at 12:32 +0200, Daniel Dettlaff via freebsd-hackers
> wrote:
>> If you need to run 32bit software with 64bit base system just try
>> creating 64bit jail with lib32 subsystem present. Then 32bit software
>> should be able to run properly in such jail, but you can't run 32bit
>> jail on 64bit base as Eugene said.
>>=20
>=20
> That is not what Eugene said, and you CAN run a 32-bit jail on a =
64-bit=20
> host; I do so on this machine.  As Eugene said, you simply need to =
copy
> a few selected 64-bit binaries into the jail, replacing the 32-bit
> version of those programs.  That is, install the jail from a 32-bit
> build or packages, and then just copy the necessary few binaries from
> your host root filesystem into the jail.
>=20
> It would be nice if there was a list somewhere of which binaries need
> to be replaced.  I just did it by trial and error... when I ran into
> things that didn't work, I tried using a 64-bit copy of that program
> and if it worked: problem solved.
>=20
> -- Ian
>=20
>>> On 22 Apr 2021, at 10:36, Peter Blok <pblok@bsd4all.org> wrote:
>>>=20
>>> Hi,
>>>=20
>>> I have created a 32-bit jail on a 64-bit running 12-STABLE. The
>>> jail is also build using the same source.
>>>=20
>>> The jail gives me a 32-bit environment. I=E2=80=99m getting an IP =
address
>>> and I can ping others on the same network segment.
>>>=20
>>> But I can=E2=80=99t set a default route.
>>>=20
>>> route add default 192.168.1.1
>>> route: writing to routing socket: Invalid argument
>>> add net default: gateway 192.168.1.1 fib 0: Invalid argument
>>>=20
>>> # netstat -rn
>>> Routing tables
>>> (0) (0) UH=20
>>> (0) (0) U=20
>>> (0) (0) UHS=20
>>> (0) (0) UH=20
>>> (0) (0) U=20
>>> (0) (0) UHS
>>>=20
>>> # ifconfig -a
>>> lo0: flags=3D8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>>> 	options=3D680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
>>> 	inet6 ::1 prefixlen 128
>>> 	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
>>> 	inet 127.0.0.1 netmask 0xff000000
>>> 	groups: lo
>>> 	nd6 options=3D21<PERFORMNUD,AUTO_LINKLOCAL>
>>> e0b_websip: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST>
>>> metric 0 mtu 1500
>>> 	options=3D8<VLAN_MTU>
>>> 	ether 0e:88:d7:20:99:80
>>> 	hwaddr 02:80:ad:6e:79:0b
>>> 	inet 192.168.1.205 netmask 0xffffff00 broadcast 192.168.1.255
>>> 	groups: epair
>>> 	media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
>>> 	status: active
>>> 	nd6 options=3D29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>>>=20
>>> Any idea how to fix this?
>>>=20
>>> I=E2=80=99m using vnet bridge
>>>=20
>>> Peter
>>>=20
>=20




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