Re: [uml-user] Failed to open /dev/net/tun, errno = 19

[Brian T G. <gle...@de...>]

On Tue, Jul 29, 2003 at 04:30:06PM -0400, Alan Murrell wrote:
| From: Alan Murrell <si...@ya...>
| To: Use...@li...
| Subject: [uml-user] Failed to open /dev/net/tun, errno =3D 19
| Date: Tue, 29 Jul 2003 16:30:06 -0400 (EDT)
|=20
| Hello,
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| I have a slight networking problem.  Netowrking does
| not come up on the guestOS.  When I run
| '/etc/init.d/network retart', I get the following
| output:
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| -----
| [root@heineken sysconfig]# /etc/init.d/network restart
| Shutting down loopback interface:  [  OK  ]
| Setting network parameters:  [  OK  ]
| Bringing up loopback interface:  [  OK  ]
| Bringing up interface eth0:  Failed to open
| /dev/net/tun, errno =3D 19
| Failed to open /dev/net/tun, errno =3D 19
| Failed to open /dev/net/tun, errno =3D 19
| Failed to open /dev/net/tun, errno =3D 19
| Failed to open /dev/net/tun, errno =3D 19
| [FAILED]
| -----
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| Permissions on /dev/net/tun are:
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| -----
| crw-rw----    1 root     uml       10, 200 Jul 29
| 08:30 /dev/net/tun
| -----
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| (I have also tried '0666', and I have also made sure
| that the user the guestOS is starting up as,
| 'heineken', is a member of the 'uml' group).

These are the permissions on the HostOS right?

Does /dev/net/tun exist inside the UML instance (i.e. GuestOS)?

On my Debian sarge UML, using devfs, i have the following:

glenn:~# ls -l /dev/net
total 0
crw-r-----    1 root     root      10, 200 Dec 31  1969 tun

If it isn't there, either you need to mknod it, or if you are using
devfs, chances are you forgot tun/tap support inside the UML kernel.

HTH,
--=20
Brian T Glenn
delink.net Internet Services