2.4.5 breaks apipa-nat rules for me

[globus243]

Hi everyone,

got a setup running under 2.4.4-RELEASE-p3 which worked just fine but stopped working after the 2.4.5 update.

I have a Modem which has a "Service-Port" which can only use an APIPA address. Clients in my LAN can reach it by calling 10.0.100.1 to access its web page and see connection information.

I did this as follows:

• connecting OPT5 (alias="SPEEDPORT_SERVICE") directly to the Service-Interface of my Modem (Modem-Serivce-Interface has the IP 169.254.2.1)
• gave OPT5 the IP 169.254.2.2
• disabled APIPA_Blocking
• created a virtual IP 10.0.100.1
• set up 2 NAT Rules:
  • 1:1 Nat on LAN-Interface to translate 100.0.100.1 to 169.254.2.1
  • Hybrid-Outbound-NAT Rule on OPT5 to allow traffic from LAN to 169.254.0.0/16

At first I thought, maybe the "APIPA_Blocking"-Option didn't survive the update, but it did. I also tried to use the new GUI Option for it. various Reboots didn't help.
I'm stumped, I can't explain why it stopped working or what I'm missing. As soon as I revert to the previous version it starts working again.

[viktor_g]

1:1 Nat on LAN-Interface to translate 100.0.100.1 to 169.254.2.1
It should be 10.0.100.1 I think

Can you show # grep 169.254 /tmp/rules.debug output ?

[globus243]

[2.4.5-RELEASE][admin@pfSense.hartlan]/root: grep 169.254 /tmp/rules.debug
binat on vmx1 from 169.254.2.1 to any -> 10.0.100.1
nat on $SPEEDPORT_SERVICE inet from 10.0.0.0/24 to 169.254.0.0/16 -> 169.254.2.2/32 port 1024:65535
nat on $WAN inet from 169.254.0.0/16 to any port 500 -> 84.146.xxx.xxx/32  static-port # Auto created rule for ISAKMP - SPEEDPORT_SERVICE to WAN
nat on $WAN inet from 169.254.0.0/16 to any -> 84.146.xxx.xxx/32 port 1024:65535  # Auto created rule - SPEEDPORT_SERVICE to WAN
table <tonatsubnets> { 10.0.100.1/32 127.0.0.0/8 ::1/128 10.0.0.0/24 172.16.0.0/28 10.254.0.0/24 10.253.0.0/24 10.252.0.0/24 169.254.0.0/16 10.150.0.0/28 10.150.0.0/28 10.0.101.0/28 10.0.102.0/28 }
[2.4.5-RELEASE][admin@pfSense.hartlan]/root:

Tried the same under 2.4.4-RELEASE-p3 and the output was the same.

[viktor_g]

@globus243 can you create ticket in https://go.netgate.com/ ?

[globus243]

Thanks for the tip, Just opened a Ticket.