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

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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
1 changed files with 5 additions and 0 deletions
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5
ndp.c
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@ -162,6 +162,11 @@ int ndp(struct ctx *c, struct ethhdr *eh, size_t len)
len = (uintptr_t)p - (uintptr_t)ihr - sizeof(*ihr); 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->daddr = ip6h->saddr;
ip6hr->saddr = c->gw6; ip6hr->saddr = c->gw6;
ip6hr->payload_len = htons(sizeof(*ihr) + len); ip6hr->payload_len = htons(sizeof(*ihr) + len);