MFC r280236:
To avoid a possible race, release the reference to ifa after return from nd6_dad_na_input().
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@ -700,8 +700,8 @@ nd6_na_input(struct mbuf *m, int off, int icmp6len)
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*/
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if (ifa
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&& (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_TENTATIVE)) {
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ifa_free(ifa);
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nd6_dad_na_input(ifa);
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ifa_free(ifa);
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goto freeit;
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}
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