[lwip-devel] [bug #21655] DHCP doesn't work reliably with multiple netifs

[Simon Goldschmidt]

Follow-up Comment #5, bug #21655 (project lwip):

Here's patch for udp_input (first file).
Couldn't test it much since I don't have two networks to connect to... But it
works with ethernet-netif and loopif.


BTW: ip_input could be sped up if checking for DHCP_CLIENT_PORT before
walking the netif list (second file).

Next, it would be good to prevent user-applications to bind to
DHCP_CLIENT_PORT when LWIP_DHCP is enabled, but there's no way of knowing
whether the pcb belongs to dhcp.c or a user app in udp_bind :-(

(file #14504, file #14505)
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Additional Item Attachment:

File name: udp.c_dhcpinput.patch          Size:1 KB
File name: ip.c_ip_input_dhcp_faster.patch Size:2 KB


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