[lwip-devel] [bug #21643] udp_send/raw_send don't fail if netif is down

[Simon Goldschmidt]

Follow-up Comment #11, bug #21643 (project lwip):

>> This shouldn't impact things like DHCP because they're not IP packets
> 
> Are you sure of that? I check with a DHCP capture, and they are UDP
packets.

Yep, same here. All the DHCP packets I ever saw were IP packets ;-)

And ARP won't send on its own: it asks for MAC addresses only if the
destination address is a unicast address. We *should* check that ARP doesn't
respond on ARP requests to its own address until the netif is up, but my guess
is this is already implemented.

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