====== FreeBSD - Network ======

===== Routing =====

<code - Example>
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
</code>

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|