[lwip-devel] [bug #46524] Device as dhcp server does not work after upgrade to lwip-1.4.1

[Simon Goldschmidt]

Follow-up Comment #6, bug #46524 (project lwip):

The patch checks dst for correct subnet (subnet-broadcasts) and src for NULL.
I'd instead check for correct subnet *or* dst==255.255.255.255. Additionally,
for dst==255.255.255.255 but local_ip not ANY, a pcb matching the inp-subnet
should be the best bet. This adds additional checks...

I think this is the correct fix. Having src==ANY is just a very special case
of the DHCP protocol.

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