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[lwip-devel] [bug #56925] Functions to obtain effective reachability (AR
[lwip-devel] [bug #56925] Functions to obtain effective reachability (ARP or NDP) status of an IP address
Fri, 20 Sep 2019 17:09:57 -0400 (EDT)
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Follow-up Comment #1, bug #56925 (project lwip):
This is what I'm currently doing to check reachability:
(Ignore the IPv6 "have_address" check, I know it's not strictly correct.)
For IPv4, I'm retrying ARP requests more frequently than lwIP would.
For IPv6, the call to nd6_get_next_hop_addr_or_queue() will be returning an
error when it tries to queue the packet because the buffer is NULL.
A simple reachability check function would avoid these problems.
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