GNU bug report logs - #32075
netcat with '-U' option for connection virt-manager to libvirt over SSH

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Package: guix; Reported by: Oleg Pykhalov <go.wigust@HIDDEN>; dated Fri, 6 Jul 2018 23:34:02 UTC; Maintainer for guix is bug-guix@HIDDEN.

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From: Maxim Cournoyer <maxim.cournoyer@HIDDEN>
To: Oleg Pykhalov <go.wigust@HIDDEN>
Subject: Re: bug#32075: netcat with '-U' option for connection virt-manager
 to libvirt over SSH
In-Reply-To: <87h8lchrfs.fsf@HIDDEN> (Oleg Pykhalov's message of "Sat, 07
 Jul 2018 02:31:35 +0300")
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Date: Fri, 29 Dec 2023 23:16:57 -0500
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Cc: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN>, 32075 <at> debbugs.gnu.org,
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Hi Oleg,

Oleg Pykhalov <go.wigust@HIDDEN> writes:

> Hello Guix,
>
> I try to use virt-manager for connection over SSH from Linux Mint to
> GuixSD running libvirt.
>
> Seems we need to package netcat which includes =E2=80=98-U=E2=80=99 optio=
n:
> --8<---------------cut here---------------start------------->8--- Unable
> Unable to connect to libvirt qemu+ssh://natsu@HIDDEN/system.
>
> The remote host requires a version of netcat/nc which supports the -U opt=
ion.
>
> Libvirt URI is: qemu+ssh://natsu@HIDDEN/system
>
> Traceback (most recent call last):
>   File "/gnu/store/pakiz00asgm6cq5l4xwbwzksd0z576iq-virt-manager-1.5.1/sh=
are/virt-manager/virtManager/connection.py", line 1036, in _do_open
>     self._backend.open(self._do_creds_password)
>   File "/gnu/store/pakiz00asgm6cq5l4xwbwzksd0z576iq-virt-manager-1.5.1/sh=
are/virt-manager/virtinst/connection.py", line 144, in open
>     open_flags)
>   File "/gnu/store/xdyrp8fbcgk2cnyck4yda2wl1vql1m82-python2-libvirt-4.1.0=
/lib/python2.7/site-packages/libvirt.py", line 105, in openAuth
>     if ret is None:raise libvirtError('virConnectOpenAuth() failed')
> libvirtError: End of file while reading data: nc: invalid option -- 'U'
> Try `nc --help' for more information.: Input/output error
> --8<---------------cut here---------------end--------------->8---

I'm missing reproduction steps; is this still a problem with our current
libvirt and virt-manager packages?

--=20
Thanks,
Maxim




Information forwarded to bug-guix@HIDDEN:
bug#32075; Package guix. Full text available.

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From: Leo Famulari <leo@HIDDEN>
To: Ludovic =?iso-8859-1?Q?Court=E8s?= <ludo@HIDDEN>
Subject: Re: bug#32075: netcat with '-U' option for connection virt-manager
 to libvirt over SSH
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On Wed, Jul 11, 2018 at 01:15:25PM +0200, Ludovic Court=E8s wrote:
> Hi Oleg,
>=20
> Oleg Pykhalov <go.wigust@HIDDEN> skribis:
>=20
> > libvirtError: End of file while reading data: nc: invalid option -- 'U'
> > Try `nc --help' for more information.: Input/output error
>=20
> There are several implementation of Netcat, and presumably libvirt
> expects a different one.
>=20
> Could you check which implementation you have on other distros?

Besides the 'netcat' package, there are netcat implementations that
offer the '-U' option provided by the nmap and LibreSSL packages.

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Information forwarded to bug-guix@HIDDEN:
bug#32075; Package guix. Full text available.

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From: ludo@HIDDEN (Ludovic =?utf-8?Q?Court=C3=A8s?=)
To: Oleg Pykhalov <go.wigust@HIDDEN>
Subject: Re: bug#32075: netcat with '-U' option for connection virt-manager to
 libvirt over SSH
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Hi Oleg,

Oleg Pykhalov <go.wigust@HIDDEN> skribis:

> libvirtError: End of file while reading data: nc: invalid option -- 'U'
> Try `nc --help' for more information.: Input/output error

There are several implementation of Netcat, and presumably libvirt
expects a different one.

Could you check which implementation you have on other distros?

TIA,
Ludo=E2=80=99.




Information forwarded to bug-guix@HIDDEN:
bug#32075; Package guix. Full text available.

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From: Oleg Pykhalov <go.wigust@HIDDEN>
To: bug-guix@HIDDEN
Subject: netcat with '-U' option for connection virt-manager to libvirt over
 SSH
Date: Sat, 07 Jul 2018 02:31:35 +0300
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--=-=-=
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Hello Guix,

I try to use virt-manager for connection over SSH from Linux Mint to
GuixSD running libvirt.

Seems we need to package netcat which includes =E2=80=98-U=E2=80=99 option:
=2D-8<---------------cut here---------------start------------->8--- Unable
Unable to connect to libvirt qemu+ssh://natsu@HIDDEN/system.

The remote host requires a version of netcat/nc which supports the -U optio=
n.

Libvirt URI is: qemu+ssh://natsu@HIDDEN/system

Traceback (most recent call last):
  File "/gnu/store/pakiz00asgm6cq5l4xwbwzksd0z576iq-virt-manager-1.5.1/shar=
e/virt-manager/virtManager/connection.py", line 1036, in _do_open
    self._backend.open(self._do_creds_password)
  File "/gnu/store/pakiz00asgm6cq5l4xwbwzksd0z576iq-virt-manager-1.5.1/shar=
e/virt-manager/virtinst/connection.py", line 144, in open
    open_flags)
  File "/gnu/store/xdyrp8fbcgk2cnyck4yda2wl1vql1m82-python2-libvirt-4.1.0/l=
ib/python2.7/site-packages/libvirt.py", line 105, in openAuth
    if ret is None:raise libvirtError('virConnectOpenAuth() failed')
libvirtError: End of file while reading data: nc: invalid option -- 'U'
Try `nc --help' for more information.: Input/output error
=2D-8<---------------cut here---------------end--------------->8---

Thanks,
Oleg.

--=-=-=
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--=-=-=--




Acknowledgement sent to Oleg Pykhalov <go.wigust@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-guix@HIDDEN. Full text available.
Report forwarded to bug-guix@HIDDEN:
bug#32075; Package guix. Full text available.
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