in-addr-util: introduce in6_addr_is_link_local_all_nodes()
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@ -54,6 +54,16 @@ int in_addr_is_link_local(int family, const union in_addr_union *u) {
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return -EAFNOSUPPORT;
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}
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bool in6_addr_is_link_local_all_nodes(const struct in6_addr *a) {
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assert(a);
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/* ff02::1 */
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return be32toh(a->s6_addr32[0]) == UINT32_C(0xff020000) &&
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a->s6_addr32[1] == 0 &&
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a->s6_addr32[2] == 0 &&
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be32toh(a->s6_addr32[3]) == UINT32_C(0x00000001);
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}
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int in_addr_is_multicast(int family, const union in_addr_union *u) {
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assert(u);
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@ -27,6 +27,7 @@ int in_addr_is_multicast(int family, const union in_addr_union *u);
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bool in4_addr_is_link_local(const struct in_addr *a);
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int in_addr_is_link_local(int family, const union in_addr_union *u);
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bool in6_addr_is_link_local_all_nodes(const struct in6_addr *a);
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bool in4_addr_is_localhost(const struct in_addr *a);
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int in_addr_is_localhost(int family, const union in_addr_union *u);
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