[lwip-devel] [bug #55972] The Neighbour Solicitation used to do IPv6 address resolution was wrong

[Gao Qingshui]

Follow-up Comment #3, bug #55972 (project lwip):

for the ping failed issue I reported, the best fix method is to update the
peer side's neighbour cache by sending one Neighbour Advertisement actively,
with override flag. There was two way to do this, 1) make nd6_send_na not one
static function and call it after L2 address changed; 2) call nd6_send_na at
the last of netif_issue_reports, this modification is take IPv4 gratituous ARP
as reference because GARP is sent out after L2 address changed, but I suggest
to add the 3rd input argument for netif_issue_reports to make the caller
decide which address used to send NA. the second way I prefer.

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