Linux wireless drivers development
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From: Ben Greear <greearb@candelatech.com>
To: David Ahern <dsahern@kernel.org>,
	linux-wireless <linux-wireless@vger.kernel.org>
Subject: VRF and UDP broadcast frames
Date: Fri, 22 Aug 2025 12:16:27 -0700	[thread overview]
Message-ID: <39bf5755-254b-e7b8-cc15-500be99d0a6b@candelatech.com> (raw)

Hello,

Assume I have a network interface assigned to a VRF (wifi AP interface is what I'm testing now).
I would like to have it be able to send and receive UDP broadcast frames.  I am binding the socket
to the AP netdev with SO_BINDTODEVICE.  From what I can tell, the socket at least cannot receive
UDP broadcasts sent to it.  I do see the broadcast arriving on the AP interface if I run tshark.

Is there any particular issue with UDP broadcast sockets in VRF?  Do I have to instead
bind to the vrf netdev instead of the ap netdev?

And always possible I doing something wrong in my socket code, my current test setup
is quite complicated.

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com


             reply	other threads:[~2025-08-22 19:24 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-22 19:16 Ben Greear [this message]
2025-08-25 14:16 ` VRF and UDP broadcast frames David Ahern
2025-08-25 15:20   ` Ben Greear

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