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

[Simon Goldschmidt]

Follow-up Comment #16, bug #21643 (project lwip):

I'll check it in, then:

- add udp_sendto_if: much like udp_sendto but takes a netif and doesn't call
ip_route
- make dhcp use udp_sendto_if in all places

- ip_route: only return a netif that is up (I'll check this in later, first
task #6969: 'Review usage of conn->err in netconn layer' must be solved; I'm
working on it)

DHCP still has a problem with multiple interfaces (receiving DHCP is not
solved correctly). I'll open a separate bug for that.

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