[lwip-devel] [bug #3168] Handling UDP/TCP PCBs upon netif address change.

[Simon Goldschmidt]

Follow-up Comment #13, bug #3168 (project lwip):

>The receive side, however, sits there and waits since there is no new packet
delivered.

Knowing which error code to return, it would be the easiest to call
udp_pcb->recv() with a pbuf = NULL to indicate an error, which could set
conn->err appropriately. That way, a new recv would return that error.
Handling a blocking recv while changing the ip_addr would still remain,
though.

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