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Bug #12632

open

Assigning a /30 WAN IP address at the console does not save the gateway correctly

Added by M Felden 5 months ago. Updated 5 days ago.

Status:
New
Priority:
High
Assignee:
-
Category:
Gateways
Target version:
Start date:
Due date:
% Done:

0%

Estimated time:
Plus Target Version:
22.09
Release Notes:
Default
Affected Version:
2.5.2
Affected Architecture:
amd64

Description

First encoutnered two months ago. Assumed I had done a typo or something and moved on. Now notice this can be reproduced every time on all installs I have tried:

ISP / Colo assign an IPv4 /30 203.0.113.156/30

Hardware has two NICs. bxe0 and bxe1. bxe0 is WAN bxe1 has no link.

- Install pfSense 2.5.2
- Assign bxe0 as WAN via console menu option 1
- Do not assign bxe1 as anything.
- Assign WAN IP manually via console menu option 2
- Specify: WAN IP 203.0.113.158, Netmask 30, Gateway 203.0.113.157

Expected behavior: Default route should be set with gateway as 203.0.113.157
Actual behavior: Gateway revers to 203.0.113.158, networking becomes impossible

Workaround:

- route del default
- route add default 203.0.113.157
- Enter web configurator
- Notice here during the WAN configuration step in web configurator it does indeed show gateway incorrectly as 203.0.113.158
- Fix gateway in web configurator
- Apply

Only ever seen this when WAN is a /30 - /22 /23/24 etc do not do this.


Files

clipboard-202112311307-sidpz.png (85.5 KB) clipboard-202112311307-sidpz.png Danilo Zrenjanin, 12/31/2021 06:07 AM
Actions #1

Updated by Viktor Gurov 5 months ago

  • Status changed from New to Feedback
  • Affected Version set to 2.5.2

Unable to reproduce:

Available interfaces:

1 - WAN (vtnet1 - dhcp, dhcp6)
2 - LAN (vtnet0 - static)
3 - OPT1 (vtnet2 - static, staticv6)

Enter the number of the interface you wish to configure: 1

Configure IPv4 address WAN interface via DHCP? (y/n) n

Enter the new WAN IPv4 address.  Press <ENTER> for none:
> 203.0.113.158

Subnet masks are entered as bit counts (as in CIDR notation) in pfSense.
e.g. 255.255.255.0 = 24
     255.255.0.0   = 16
     255.0.0.0     = 8

Enter the new WAN IPv4 subnet bit count (1 to 31):
> 30

For a WAN, enter the new WAN IPv4 upstream gateway address.
For a LAN, press <ENTER> for none:
> 203.0.113.157

result:

# route -4n get default
   route to: 0.0.0.0
destination: 0.0.0.0
       mask: 0.0.0.0
    gateway: 203.0.113.157
        fib: 0
  interface: vtnet1
      flags: <UP,GATEWAY,DONE,STATIC>
 recvpipe  sendpipe  ssthresh  rtt,msec    mtu        weight    expire
       0         0         0         0      1500         1         0

Actions #2

Updated by Viktor Gurov 5 months ago

seems to be fixed in #11581
please test on the latest development snapshot

Actions #3

Updated by Danilo Zrenjanin 5 months ago

Tested against:

2.6.0-BETA (amd64)
built on Thu Dec 30 06:16:46 UTC 2021
FreeBSD 12.3-STABLE

It works as expected. I am marking this ticket resolved.

Actions #4

Updated by Danilo Zrenjanin 5 months ago

  • Status changed from Resolved to Feedback
  • Priority changed from Normal to High
Actions #5

Updated by Danilo Zrenjanin 5 months ago

I tested again, against the same version:

2.6.0-BETA (amd64)
built on Thu Dec 30 06:16:46 UTC 2021
FreeBSD 12.3-STABLE

This time I didn't have the default gateway in the routing table after setting WAN IP 203.0.113.158, Netmask 30, Gateway 203.0.113.157 from the console.

It's strange it doesn't fail every time.

Needs more testing.

Available interfaces:

1 - WAN (vtnet0 - dhcp)
2 - LAN (vtnet1.20 - static)

Enter the number of the interface you wish to configure: 1

Configure IPv4 address WAN interface via DHCP? (y/n) n

Enter the new WAN IPv4 address.  Press <ENTER> for none:
> 203.0.113.158

Subnet masks are entered as bit counts (as in CIDR notation) in pfSense.
e.g. 255.255.255.0 = 24
     255.255.0.0   = 16
     255.0.0.0     = 8

Enter the new WAN IPv4 subnet bit count (1 to 32):
> 30

For a WAN, enter the new WAN IPv4 upstream gateway address.
For a LAN, press <ENTER> for none:
> 203.0.113.157

Configure IPv6 address WAN interface via DHCP6? (y/n) n

Enter the new WAN IPv6 address.  Press <ENTER> for none:
>
Disabling IPv4 DHCPD...
Disabling IPv6 DHCPD...

Do you want to revert to HTTP as the webConfigurator protocol? (y/n) n

Please wait while the changes are saved to WAN...
 Reloading filter...
 Reloading routing configuration...route: writing to routing socket: Network is unreachable

 DHCPD...

The IPv4 WAN address has been set to 203.0.113.158/30

Press <ENTER> to continue.
[2.6.0-BETA][admin@pfSense.home.arpa]/root: route -n get default
route: route has not been found
[2.6.0-BETA][admin@pfSense.home.arpa]/root: netstat -rn
Routing tables

Internet:
Destination        Gateway            Flags     Netif Expire
127.0.0.1          link#4             UH          lo0
192.168.20.0/24    link#7             U      vtnet1.2
192.168.20.2       link#7             UHS         lo0
203.0.113.156/30   link#1             U        vtnet0
203.0.113.158      link#1             UHS         lo0
Actions #6

Updated by Danilo Zrenjanin 4 months ago

I replicated the issue on 22.01.r.20220124.1828 and 2.6.0.r.20220124.1828.

Available interfaces:

1 - WAN (lagg0.4090 - dhcp)
2 - LAN (lagg0.4091 - static)
3 - OPT1 (ix0)
4 - OPT2 (ix1)

Enter the number of the interface you wish to configure: 1

Configure IPv4 address WAN interface via DHCP? (y/n) n

Enter the new WAN IPv4 address.  Press <ENTER> for none:
> 203.0.113.158

Subnet masks are entered as bit counts (as in CIDR notation) in Netgate pfSense Plus.
e.g. 255.255.255.0 = 24
     255.255.0.0   = 16
     255.0.0.0     = 8

Enter the new WAN IPv4 subnet bit count (1 to 32):
> 30

For a WAN, enter the new WAN IPv4 upstream gateway address.
For a LAN, press <ENTER> for none:
> 203.0.113.157

Configure IPv6 address WAN interface via DHCP6? (y/n) n

Enter the new WAN IPv6 address.  Press <ENTER> for none:
>
Disabling IPv4 DHCPD...
Disabling IPv6 DHCPD...

Do you want to revert to HTTP as the webConfigurator protocol? (y/n) n

Please wait while the changes are saved to WAN...
 Reloading filter...
 Reloading routing configuration...route: writing to routing socket: Network is unreachable

 DHCPD...

The IPv4 WAN address has been set to 203.0.113.158/30

Press <ENTER> to continue.
netstat -rn
Routing tables

Internet:
Destination        Gateway            Flags     Netif Expire
127.0.0.1          link#16            UH          lo0
192.168.1.0/24     link#21            U      lagg0.40
192.168.1.1        link#21            UHS         lo0
203.0.113.156/30   link#20            U      lagg0.40
203.0.113.158      link#20            UHS         lo0

It looks like it fails to write the default gateway if it is not reachable when defining it from the console.

Actions #7

Updated by Jim Pingle 4 months ago

  • Subject changed from 2.5.2 New installs, when assigning WAN IP from a /30 gateway is saved incorrectly. to Assigning a /30 WAN IP address at the console does not save the gateway correctly
  • Status changed from Feedback to New
  • Target version set to 2.7.0
  • Plus Target Version set to 22.05
Actions #8

Updated by Jim Pingle 5 days ago

  • Plus Target Version changed from 22.05 to 22.09
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