Bug #14605
open
Dynamic DNS uses the default gateway interface instead of the specified interface
Added by Marcos M over 1 year ago.
Updated 19 days ago.
Status:
Pull Request Review
Plus Target Version:
25.01
Description
Steps:
- Configure a gateway group with WAN1 (tier 1) and WAN2 (tier 2), and set it as the default system gateway.
- Configure Dynamic DNS on WAN2.
This results in DDNS using the current default gateway (WAN1) instead of the specified interface (WAN2).
Files
- Subject changed from Dynamic DNS does not ignore gateway group when set to a specific interface to Dynamic DNS always uses the default gateway interface instead of the specified interface
This seems to be due to the Check IP Service using the default gateway which happens because the WANs are both RFC1918.
- Related to Feature #14610: Add source address option to Check IP Services added
I followed the steps to reproduce the issue. However, in my case, the Dynamic DNS used the WAN2 as defined.
1. Configured Gateway Group and defined it as the default gateway for the firewall.
2. Defined Dynamic DNS setup using Digital Ocean as the service type and set WAN2 for the Interface.
3. On the upstream device, I blocked all the traffic for the WAN1 interface (except ICMP to keep the WAN1 up).
4. The Dynamic DNS server regularly updated the A record using the WAN2 interface.
5. I was able to capture packets on the WAN2 during the Dynamic DNS update process.
- Subject changed from Dynamic DNS always uses the default gateway interface instead of the specified interface to Dynamic DNS uses the default gateway interface instead of the specified interface when behind NAT
Good afternoon. I can confirm that there is an error, but for some reason netgate does not want to investigate it (if I’m wrong, please tell me, is it not configured correctly? The change request comes from the default gateway, but from ip wan2(opt1)
I use netgate 6100 equipment with version 23.09.1
- Subject changed from Dynamic DNS uses the default gateway interface instead of the specified interface when behind NAT to Dynamic DNS uses the default gateway interface instead of the specified interface
- Status changed from New to Pull Request Review
- Assignee set to Marcos M
- Target version set to 2.8.0
- Plus Target Version set to 25.01
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