Re: mcx(4) and bridge(4)

[Hauke Fath <hf%spg.tu-darmstadt.de@localhost>]

On 4/11/25 20:03, Manuel Bouyer wrote:
> > Calling tcpdump with 'vlan 2' on mcx0 gives me the arp requests that I see
> > on vlan2.
> that's new behavior to me.

Switching to bge0, I see the same - no output for the DomU host unless I 
specify 'and vlan 2'.

> But I notice that the hosts where I ran my tests are running netbsd-9,
> so something may have changed with -10
>
> If tcpdump doens't shows the replies to arp requests either they're not making
> it to the ethernet port, or the mcx driver is broken with promiscious mode.

Setting up the same tcpdump probes for the bge0 scenario, I do get the 
arp requests from DomU _and_ replies to them both on vlan2 and the 
physical interface (with proper vlan specified).

Cheerio,
Hauke

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