FreeBSD - Network

Routing

root@opnsense:~ # netstat -4rn
Routing tables

Internet:
Destination        Gateway            Flags     Netif Expire
default            203.0.113.1        UGS        igc1
192.0.0.0/24       link#9             US          wg0
203.0.113.0/24     link#2             U          igc1
203.0.113.5        link#5             UHS         lo0
127.0.0.1          link#5             UH          lo0
198.51.100.0/24    link#1             U          igc0
198.51.100.1       link#5             UHS         lo0

Routing Flags (man 1 netstat).

Flag	Name	Description
1	RTF_PROTO1	Protocol specific routing flag #1
2	RTF_PROTO2	Protocol specific routing flag #2
3	RTF_PROTO3	Protocol specific routing flag #3
B	RTF_BLACKHOLE	Just discard pkts (during updates)
b	RTF_BROADCAST	The route represents a broadcast address
D	RTF_DYNAMIC	Created dynamically (by redirect)
G	RTF_GATEWAY	Destination requires forwarding by intermediary
H	RTF_HOST	Host entry (net otherwise)
L	RTF_LLINFO	Valid protocol to link address translation
M	RTF_MODIFIED	Modified dynamically (by redirect)
R	RTF_REJECT	Host or net unreachable
S	RTF_STATIC	Manually added
U	RTF_UP	Route usable
X	RTF_XRESOLVE	External daemon translates proto to link address