+bool link_has_carrier(unsigned flags, uint8_t operstate);
+
+const char* link_state_to_string(LinkState s) _const_;
+LinkState link_state_from_string(const char *s) _pure_;
+
+const char* link_operstate_to_string(LinkOperationalState s) _const_;
+LinkOperationalState link_operstate_from_string(const char *s) _pure_;
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
+#define _cleanup_link_unref_ _cleanup_(link_unrefp)
+
+/* DHCP support */
+
+const char* dhcp_support_to_string(DHCPSupport i) _const_;
+DHCPSupport dhcp_support_from_string(const char *s) _pure_;
+
+int config_parse_dhcp(const char *unit, const char *filename, unsigned line,
+ const char *section, unsigned section_line, const char *lvalue,
+ int ltype, const char *rvalue, void *data, void *userdata);
+
+/* LLMNR support */
+
+const char* llmnr_support_to_string(LLMNRSupport i) _const_;
+LLMNRSupport llmnr_support_from_string(const char *s) _pure_;
+
+int config_parse_llmnr(const char *unit, const char *filename, unsigned line,
+ const char *section, unsigned section_line, const char *lvalue,
+ int ltype, const char *rvalue, void *data, void *userdata);
+
+/* Address Pool */
+
+int address_pool_new(Manager *m, AddressPool **ret, int family, const union in_addr_union *u, unsigned prefixlen);
+int address_pool_new_from_string(Manager *m, AddressPool **ret, int family, const char *p, unsigned prefixlen);
+void address_pool_free(AddressPool *p);
+
+int address_pool_acquire(AddressPool *p, unsigned prefixlen, union in_addr_union *found);