from forum post ---> https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1185655#1185655

#

mrjcd@Will-Be-Was:~$ ssh root@citadel-station-homeworld.mrjcd.com
DD-WRT v3.0-r41771 std (c) 2019 NewMedia-NET GmbH
Release: 12/21/19
Board: Linksys EA8500
==========================================================
 
     ___  ___     _      _____  ______       ____  ___ 
    / _ \/ _ \___| | /| / / _ \/_  __/ _  __|_  / / _ \
   / // / // /___/ |/ |/ / , _/ / /   | |/ //_ <_/ // /
  /____/____/    |__/|__/_/|_| /_/    |___/____(_)___/ 
                                                     
                       DD-WRT v3.0
                   http://www.dd-wrt.com
 
==========================================================


BusyBox v1.31.1 (2019-12-21 03:17:59 +03) built-in shell (ash)

root@Citadel-Station-Homeworld:~# ifconfig
ath0      Link encap:Ethernet  HWaddr C0:56:27:06:39:FF  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:516926 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1283669 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:46461923 (44.3 MiB)  TX bytes:1793570275 (1.6 GiB)

ath0.1    Link encap:Ethernet  HWaddr C2:56:27:06:39:FF  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2438087 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8367994 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:256777756 (244.8 MiB)  TX bytes:12265207107 (11.4 GiB)

ath1      Link encap:Ethernet  HWaddr C0:56:27:06:3A:00  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:65341 errors:0 dropped:0 overruns:0 frame:0
          TX packets:159651 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:11528528 (10.9 MiB)  TX bytes:77241917 (73.6 MiB)

br0       Link encap:Ethernet  HWaddr C0:56:27:06:39:FD  
          inet addr:10.72.28.13  Bcast:10.72.28.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2216169 errors:0 dropped:15258 overruns:0 frame:0
          TX packets:5529067 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:538115131 (513.1 MiB)  TX bytes:7514591348 (6.9 GiB)

br1       Link encap:Ethernet  HWaddr C2:56:27:06:39:FF  
          inet addr:10.15.26.225  Bcast:10.15.26.255  Mask:255.255.255.224
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2285046 errors:0 dropped:87 overruns:0 frame:0
          TX packets:8135807 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:173026657 (165.0 MiB)  TX bytes:12036525068 (11.2 GiB)

eth0      Link encap:Ethernet  HWaddr C0:56:27:06:39:FD  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15558128 errors:0 dropped:141 overruns:0 frame:0
          TX packets:8919504 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3050287734 (2.8 GiB)  TX bytes:2293371165 (2.1 GiB)
          Interrupt:100 

imq0      Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
          UP RUNNING NOARP  MTU:1500  Metric:1
          RX packets:13554747 errors:0 dropped:0 overruns:0 frame:0
          TX packets:13552672 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:30 
          RX bytes:2156539527 (2.0 GiB)  TX bytes:2152131558 (2.0 GiB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING MULTICAST  MTU:65536  Metric:1
          RX packets:248 errors:0 dropped:0 overruns:0 frame:0
          TX packets:248 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:29954 (29.2 KiB)  TX bytes:29954 (29.2 KiB)

tun2      Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
          inet addr:10.172.128.241  P-t-P:10.172.128.241  Mask:255.255.255.240
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:4298 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2956 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:965912 (943.2 KiB)  TX bytes:1538569 (1.4 MiB)

vlan1     Link encap:Ethernet  HWaddr C0:56:27:06:39:FD  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1707404 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4345969 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:572382637 (545.8 MiB)  TX bytes:5790467466 (5.3 GiB)

vlan2     Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx  
          inet addr:96.46.208.xxx  Bcast:96.46.208.159  Mask:255.255.255.224
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5599806 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4489763 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:18965886215 (17.6 GiB)  TX bytes:751404155 (716.5 MiB)

vlan4     Link encap:Ethernet  HWaddr C0:56:27:06:39:FD  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:106 errors:0 dropped:0 overruns:0 frame:0
          TX packets:83772 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:9826 (9.5 KiB)  TX bytes:10788824 (10.2 MiB)

root@Citadel-Station-Homeworld:~# iptables -t raw -nvL PREROUTING
Chain PREROUTING (policy ACCEPT 10M packets, 20G bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DROP       0    --  !tun2  *       0.0.0.0/0            148.174.192.0/18    
root@Citadel-Station-Homeworld:~# uptime
 06:51:52 up 23:02,  load average: 0.27, 0.23, 0.23
root@Citadel-Station-Homeworld:~# date
Sun Dec 22 06:51:55 CST 2019
root@Citadel-Station-Homeworld:~# exit
Connection to citadel-station-homeworld.mrjcd.com closed.
mrjcd@Will-Be-Was:~$ 

#
EDIT:

No reset - GUI install r41786 over r41771
    she's all good
The ovpn server iptable routing looks more sane now  


mrjcd@Deb:~$ ssh root@citadel-station-homeworld.mrjcd.com
DD-WRT v3.0-r41786 std (c) 2019 NewMedia-NET GmbH
Release: 12/23/19
Board: Linksys EA8500
==========================================================
 
     ___  ___     _      _____  ______       ____  ___ 
    / _ \/ _ \___| | /| / / _ \/_  __/ _  __|_  / / _ \
   / // / // /___/ |/ |/ / , _/ / /   | |/ //_ <_/ // /
  /____/____/    |__/|__/_/|_| /_/    |___/____(_)___/ 
                                                     
                       DD-WRT v3.0
                   http://www.dd-wrt.com
 
==========================================================


BusyBox v1.31.1 (2019-12-23 07:33:46 +03) built-in shell (ash)

root@Citadel-Station-Homeworld:~# iptables -t raw -nvL PREROUTING
Chain PREROUTING (policy ACCEPT 403K packets, 491M bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DROP       0    --  !tun2  *       0.0.0.0/0            10.172.128.240/28   
root@Citadel-Station-Homeworld:~# uptime
 06:19:29 up 35 min,  load average: 0.10, 0.04, 0.01
root@Citadel-Station-Homeworld:~# date
Mon Dec 23 06:19:31 CST 2019
root@Citadel-Station-Homeworld:~# exit
Connection to citadel-station-homeworld.mrjcd.com closed.
mrjcd@Deb:~$