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-rw-r--r--src/ip6_input.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/ip6_input.c b/src/ip6_input.c
index d88d1ab..a83e4f8 100644
--- a/src/ip6_input.c
+++ b/src/ip6_input.c
@@ -44,7 +44,7 @@ void ip6_input(struct mbuf *m)
goto bad;
}
- if (ntohs(ip6->ip_pl) > slirp->if_mtu) {
+ if (ntohs(ip6->ip_pl) + sizeof(struct ip6) > slirp->if_mtu) {
icmp6_send_error(m, ICMP6_TOOBIG, 0);
goto bad;
}