[issue1279] vnconfig: unintuitive error message

[Simon 'corecode' Schubert (via DragonFly issue tracker)]

New submission from Simon 'corecode' Schubert <corecode at fs.ei.tum.de>:

If you forget to specify the filename, vnconfig reports a totally bogus error
message:

# vnconfig -s labels -c vn0
vnconfig: VNIOCATTACH: Numerical argument out of domain

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messages: 6151
nosy: corecode
status: unread
title: vnconfig: unintuitive error message

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DragonFly issue tracker <bugs at lists.dragonflybsd.org>
<http://bugs.dragonflybsd.org/issue1279>
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