Date: Sat, 4 Dec 2021 11:44:22 +0100 From: Peter <pmc@citylink.dinoex.sub.org> To: freebsd-stable@freebsd.org Subject: 12.3: igb driver does not receive vlan-tagged packets Message-ID: <YatGhsksdMK/fqfy@gate.intra.daemon.contact>
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Hija, after swapping network interface card (re0) to igb0, my networking failed. I found that igb does send out vlan tagged packets, but not receive any answers, unless a vlan* device was previousely attached with the required vlan number (observed with tcpdump). My current workaround is this hack in rc.conf, which makes things work again for now (I need vlan 7 only for ISP uplink): > cloned_interfaces="vlan0" > ifconfig_vlan0="vlan 7 vlandev igb0" > ifconfig_vlan0_alias0="destroy" That vlan0 device is not needed, but it must have existed once after boot in order to receive the packets at all. This was not the case with the re0 driver. Switching off all hw-offload stuff doesn't seem to change the issue. Is there a rationale for this, or am I missing some neccessary config? (Not seeing any bugreports or otherwise discussion of the matter) cheerio, PMc
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