bool link_relevant(Link *l, int family);
LinkAddress* link_find_address(Link *l, int family, const union in_addr_union *in_addr);
void link_add_rrs(Link *l, bool force_remove);
bool link_relevant(Link *l, int family);
LinkAddress* link_find_address(Link *l, int family, const union in_addr_union *in_addr);
void link_add_rrs(Link *l, bool force_remove);