[Bug 221317] ifconfig down/up issue after ixgbe driver update in r320897

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221317

Timo Voelker <timo.voelker at fh-muenster.de> changed:

           What    |Removed                     |Added
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                 CC|                            |timo.voelker at fh-muenster.de

--- Comment #45 from Timo Voelker <timo.voelker at fh-muenster.de> ---
I experienced this issue while configuring VLANs.

I installed FreeBSD 12.0 Release on a Dell PowerEdge R430 with an Intel
Ethernet 10G 2P X520 Adapter. If I add these lines to /etc/rc.conf

ifconfig_ix0="up"
vlans_ix0="102"
ifconfig_ix0_102="inet 10.10.10.12/24 description test"

ix0 stays down. A 'ifconfig ix0 up' has no effect then. If I start FreeBSD with
only

ifconfig_ix0="up"

in /etc/rc.conf, I can use the following commands to successfully add and use
the vlan (ix0 is up).

ifconfig ix0 up
ifconfig ix0.102 create vlan 102 vlandev ix0 inet 10.10.10.12/24

An update to 12.0-p3 with the commands

# freebsd-update fetch
# freebsd-update install

did not fix it. I then downloaded the FreeBSD sources (base/releng/12.0),
applied the patch 

https://reviews.freebsd.org/D18468

and complied and installed kernel and world. Now, I'm able to boot FreeBSD with
the above VLAN config in /etc/rc.conf. 

Thanks to everyone involved here!

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