| lwIP
    2.1.2
    Lightweight IP stack | 
#include <ip6.h>
| Data Fields | |
| u32_t | _v_tc_fl | 
| u16_t | _plen | 
| u8_t | _nexth | 
| u8_t | _hoplim | 
| ip6_addr_p_t | src | 
The IPv6 header.
| u8_t ip6_hdr::_hoplim | 
hop limit
| u8_t ip6_hdr::_nexth | 
next header
| u16_t ip6_hdr::_plen | 
payload length
| u32_t ip6_hdr::_v_tc_fl | 
version / traffic class / flow label
| ip6_addr_p_t ip6_hdr::src | 
source and destination IP addresses