lwIP 2.1.2 Lightweight IP stack

Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

### - a -

- acceptmbox : netconn
- access : snmp_node_instance
- ad : api_msg
- additional : mdns_outpacket
- addr : dns_api_msg , zepif_init
- addr_index : netif_ext_callback_args_t::ipv6_addr_state_changed_s , netif_ext_callback_args_t::ipv6_set_s
- address : netif_ext_callback_args_t::ipv6_addr_state_changed_s
- alloc : altcp_allocator_s
- answer_name : netbios_answer
- answer_name_flags : netbios_answer
- answers : mdns_outpacket , mdns_packet
- answers_left : mdns_packet
- arg : altcp_allocator_s
- asn1_type : snmp_node_instance
- auth_plain : smtp_session
- auth_plain_len : smtp_session
- authoritative : mdns_outpacket