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ndp: Store link-local or global address on any NDP message received

The guest might not send other types of traffic before we try to
communicate to it, so take also this chance to store its configured
addresses.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio 2021-07-21 10:04:17 +02:00
parent 5ec9ad7e9d
commit 7fa3e90290

5
ndp.c
View File

@ -162,6 +162,11 @@ int ndp(struct ctx *c, struct ethhdr *eh, size_t len)
len = (uintptr_t)p - (uintptr_t)ihr - sizeof(*ihr);
if (IN6_IS_ADDR_LINKLOCAL(&ip6h->saddr))
c->addr6_ll_seen = ip6h->saddr;
else
c->addr6_seen = ip6h->saddr;
ip6hr->daddr = ip6h->saddr;
ip6hr->saddr = c->gw6;
ip6hr->payload_len = htons(sizeof(*ihr) + len);