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From: =?UTF-8?B?UmHDumwgTXXDsW96IC0gQ1VTVE9T?= <raul.munoz@custos.es>
Subject: 'ifconfig lagg0.300 create' fails with 'SIOIFCREATE2: Device not
 configured' on r368459
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But works on r368184
no problem on regular, not aggregated interfaces

can anyone give it a try?

maybe related to:
https://svnweb.freebsd.org/base?view=revision&revision=368346