VTI gateways not adding static routes in 24.03

OhYeah 0 · May 19, 2024, 10:54 AM

@stephenw10 said in VTI gateways in 24.03:

I mean if you edit the static route and resave it (without changing anything) does the route then appear?

Nope...

stephenw10 · May 19, 2024, 1:12 PM

Is there anything you can do to make the static routes return?

Do you see any errors logged when you resaved the static route? In the System or Routing logs?

OhYeah 0 · May 19, 2024, 9:42 PM

@stephenw10 said in VTI gateways in 24.03:

Do you see any errors logged when you resaved the static route? In the System or Routing logs?

I did see this bit in the "general" section of system logs after I resaved the static routes. These log entries repeated for every static route.

May 19 13:32:14 php-fpm 54069 /system_routes_edit.php: Configuration Change: admin@xxx.xxx.xx.xx (Local Database): Saved static route configuration.
May 19 13:32:14 check_reload_status 646 Syncing firewall
May 19 13:32:16 php-fpm 594 /system_routes.php: Gateway, NONE AVAILABLE
May 19 13:32:16 check_reload_status 646 Reloading filter

PS. Obscured my IP address.

OhYeah 0 · May 19, 2024, 9:55 PM

@LarryFahnoe said in VTI gateways in 24.03:

I'm not meaning to hijack your thread, but it would appear we're both stumbling over the same (or related) bug: the static route for a remote network across an IPsec VTI is not being loaded.

No no, I was actually relieved to find out that someone else had ran into the same issue.

PS. When you resave the static route do you get the same messaged in system logs/general?

LarryFahnoe · May 19, 2024, 10:04 PM

@OhYeah-0 Yes, same as the messages you show.

May 19 16:02:36 pfs-m php-fpm[67932]: /system_routes_edit.php: Configuration Change: fahnoe@192.168.5.67 (Local Database): Saved static route configuration.
May 19 16:02:36 pfs-m check_reload_status[645]: Syncing firewall
May 19 16:02:36 pfs-m php-fpm[67932]: /system_routes_edit.php: Beginning configuration backup to https://acb.netgate.com/save
May 19 16:02:40 pfs-m php-fpm[594]: /system_routes.php: Gateway, NONE AVAILABLE
May 19 16:02:40 pfs-m check_reload_status[645]: Reloading filter

stephenw10 · May 20, 2024, 6:03 AM

No errors? Nothing in the Routing log?

OhYeah 0 · May 20, 2024, 6:03 AM

@stephenw10 said in VTI gateways in 24.03:

No errors? Nothing in the Routing log?

Nothing else apart from the "gateway not available" one.

I booted the device back into 23.09 until a fix is found.

LarryFahnoe · May 20, 2024, 11:55 AM

@stephenw10 said in VTI gateways in 24.03:

No errors? Nothing in the Routing log?

No. This is in part why I opened the redmine and am trying to provide information. I believe my config to be quite simple: just a pair of 4200s with an IPsec VTI between them & and static routes to the LANs on either side, so I would have expected that others would be seeing the same thing. It sounds like @OhYeah-0 has a somewhat more complex config but is seeing a similar issue. That such a simple config (as mine is) that was working properly prior to the upgrade to 24.03 spells BUG to me.

Earlier I'd asked on the support thread about enabling debugging but got crickets. I see debug is set to false in /etc/inc/globals.inc and am tempted to turn that on. Is there a better or supported way to do that via the GUI somewhere? If so, I haven't found it.

--Larry

OhYeah 0 · May 20, 2024, 12:13 PM

I just remember that I installed another new Netgate 4100 for a new client and that device isn't actively being used, so I can use it for testing. It was immediately updated to 24.03 and it is showing exactly the same behavior.

I tried deleting the existing static route and re-create it, it is still not appearing in the routes table. No error messages in system logs -> routing.

My gut feeling is that the core reason of the bug is pfsense not considering 0.0.0.0/0 routing valid and thus not applying the static routes to the routes table.

LarryFahnoe · May 20, 2024, 12:20 PM

@OhYeah-0 As mentioned above, mine are using a /30 transit network rather than the 0.0.0.0/0 config you have, but we seem to be seeing the same thing: the static route doesn't load. My curious gut says: is there a timing issue where the tunnel hasn't come up yet which makes the static route seem invalid? Seems like the logs are not telling us the whole story though.

--Larry

OhYeah 0 · May 20, 2024, 12:39 PM

@LarryFahnoe said in VTI gateways in 24.03:

My curious gut says: is there a timing issue where the tunnel hasn't come up yet which makes the static route seem invalid?

IPSEC P1 instances have come online in both cases without problems for me.

EDIT: I think I might've have slightly misunderstood your point. It's an interesting thought that it could be a timing issue but I don't ever recall seeing such a problem with pfsense before.

stephenw10 · May 20, 2024, 1:00 PM

Yeah it seems likely it fails to add the route because the gateway is not yet available. If you have a dynamic gateway like that it won't show as up until the link is established.

However I would expect it to then be able to add routes after the VTI and hence the gateway is up.

Using 0.0.0.0/0 means there is not a dynamic gateway so that could be a problem. I'm not sure why that would be any different in 23.09 though.

But I'm surprised the route command doesn't throw an error.

Can you manually add a route at the CLI?

OhYeah 0 · May 20, 2024, 1:07 PM

@stephenw10 said in VTI gateways in 24.03:

Using 0.0.0.0/0 means there is not a dynamic gateway so that could be a problem.

BTW, just to clarify: using 0.0.0.0/0 routing, the gateway IP always showed as "dynamic" in previous versions (in GUI under System -> Routing -> Gateways). In the dashboard it shows as "n/a" as before.

stephenw10 · May 20, 2024, 1:10 PM

Yeah so to add a static route there it would need to be via the interface directly. I'd have to dig into the syntax to test that.

Do you know how that static route appeared in the routing table in 23.09?

LarryFahnoe · May 20, 2024, 1:13 PM

@stephenw10 said in VTI gateways in 24.03:

Can you manually add a route at the CLI?

Yes, but the question is when. With the system up and tunnel functioning I can add another route (to a bogus network for test):

# route add -net 192.168.15.0/24 192.168.8.2
add net 192.168.15.0: gateway 192.168.8.2

I can reboot later this morning but the tunnel comes up immediately, so it will likely not throw any error by the time I log in to add the route via the CLI. Again, one one system, rc.newwanip triggers the route to be added about 15 min after reboot.

Any insight to offer on my question about enabling debugging?

--Larry

stephenw10 · May 20, 2024, 1:20 PM

Setting that would not give you any additional debug info AFAIK.

Hmm, yet resaving the static route does not create the route which should run that exact same command....

OhYeah 0 · May 20, 2024, 1:21 PM

@stephenw10 said in VTI gateways in 24.03:

Do you know how that static route appeared in the routing table in 23.09?

DESTINATION - GATEWAY - FLAGS - USES - MTU - INTERFACE

10.10.24.0/24 link#13 US 7 1400 ipsec2

192.168.24.0/24 link#13 US 7 1400 ipsec2

192.168.131.0/24 link#13 US 7 1400 ipsec2

(From GUI: Diagnostics -> Routes)

stephenw10 · May 20, 2024, 1:30 PM

Right so via the link directly.

LarryFahnoe · May 20, 2024, 2:29 PM

@stephenw10 said in VTI gateways in 24.03:

Hmm, yet resaving the static route does not create the route which should run that exact same command

Okay, so I just rebooted and then ssh'd in. The static route to 192.168.3.0/24 is missing, added it without issue. Lightly edited output removing the references to external addresses.

# netstat -rn4
Routing tables

Internet:
Destination        Gateway            Flags     Netif Expire
127.0.0.1          link#6             UH          lo0
192.168.0.2        link#6             UH          lo0
192.168.5.0/24     link#3             U          igc2
192.168.5.1        link#6             UHS         lo0
192.168.8.1        link#6             UHS         lo0
192.168.8.2        link#9             UH       ipsec1
192.168.10.1       link#6             UH          lo0
# 
# route add -net 192.168.3.0/24 192.168.8.2
add net 192.168.3.0: gateway 192.168.8.2
# 
# netstat -rn4
Routing tables

Internet:
Destination        Gateway            Flags     Netif Expire
127.0.0.1          link#6             UH          lo0
192.168.0.2        link#6             UH          lo0
192.168.3.0/24     192.168.8.2        UGS      ipsec1
192.168.5.0/24     link#3             U          igc2
192.168.5.1        link#6             UHS         lo0
192.168.8.1        link#6             UHS         lo0
192.168.8.2        link#9             UH       ipsec1
192.168.10.1       link#6             UH          lo0

From my position, the commonality here is that @OhYeah-0 and I both have systems with static routes not getting loaded. Beyond that there are variations on the theme:

One of my systems does not get the static route on boot, but rc.newwanip triggers the route to be loaded about 15 min after boot
Another of my systems now does get the static route loaded on boot, but this was a result of the steps Lev suggested in the redmine. I haven't been able to get Lev's steps to work on my other system
It sounds like @OhYeah-0 has systems that do not get the static route loaded at all

--Larry

LarryFahnoe · May 20, 2024, 3:34 PM

@stephenw10 said in VTI gateways in 24.03:

Right so via the link directly.

Hmm, so you've uncovered a new wrinkle, but I wonder if that might be due to @OhYeah-0 using the 0.0.0.0/0?

I have yet to roll back to 23.09.1 and look at how the route was loaded. I would assume however that since I am using a /30 transit network, the route would be via the gateway IP I provided; not sure if an interface route would make sense if the user provides a gateway IP.

Under 24.03 I did just add the route via the link & traffic passes as expected.

# route del -net 192.168.3.0/24 192.168.8.2 
del net 192.168.3.0: gateway 192.168.8.2
# 
# route add -net 192.168.3.0/24 -interface ipsec1
add net 192.168.3.0: gateway ipsec1
# 
# netstat -rn4
Routing tables

Internet:
Destination        Gateway            Flags     Netif Expire
127.0.0.1          link#6             UH          lo0
192.168.0.2        link#6             UH          lo0
192.168.3.0/24     link#9             US       ipsec1
192.168.5.0/24     link#3             U          igc2
192.168.5.1        link#6             UHS         lo0
192.168.8.1        link#6             UHS         lo0
192.168.8.2        link#9             UH       ipsec1
192.168.10.1       link#6             UH          lo0

--Larry