tc->mrtt_us * 1e3, tc->rttvar / 1000.0);
s = format (s, " rtt_ts %.4f rtt_seq %u\n", tc->rtt_ts,
tc->rtt_seq - tc->iss);
- s = format (s, " next_node %u opaque 0x%x fib_index %u\n",
- tc->next_node_index, tc->next_node_opaque, tc->c_fib_index);
+ s = format (s, " next_node %u opaque 0x%x fib_index %u sw_if_index %d\n",
+ tc->next_node_index, tc->next_node_opaque, tc->c_fib_index,
+ tc->sw_if_index);
s = format (s, " cong: %U", format_tcp_congestion, tc);
if (tc->state >= TCP_STATE_ESTABLISHED)