How do I set the IP addresses of DNS servers in PCO(Protocol Configuration Options)?

am677 · June 22, 2020, 1:44am

I would like free5GC to return the IP addresses of DNS servers in a PDU session establishment accept message only if free5GC receives the following DNS address request in a PDU session establishment request.

However I could not find any DNS address related parameter in config files.
Is there any way to configure DNS addresses in PCO?

(See 10.5.6.3A in TS 3GPP TS 24.008 [12] or 3GPP TS 24.501 for PCO.)

free5GC · June 24, 2020, 10:44am

Dear @am677,

We didn’t implement this feature yet. Still we though these as an important feature so we put it in our priority.

Thank you for your remind. It’s kindly of you to give an feature request on our GitHub issue list.

am677 · June 25, 2020, 6:33am

I appreciate your kindness.

github.com/free5gc/free5gc

[Feat] Functions to transfer the IP addresses of DNS servers to UE using Protocol Configuration Options (PCO)

opened 06:31AM - 25 Jun 20 UTC

closed 04:59AM - 04 Aug 20 UTC

am677

enhancement SMF

## Issue Description ### What's the version are you using - free5GC Version:… v3.0.2 - UE: Huawei 5G CPE Pro ### Is your feature request related to a problem? Please describe. Free5GC can not return the IP addresses of DNS servers when an UE requests the DNS addresses in PCO. This leads to any UE being not able to communicate with Internet services. ![PCO](https://user-images.githubusercontent.com/66290148/85667311-69b78180-b6f8-11ea-8102-ae826861db5a.jpg) ### Describe the solution you'd like I would be grateful if you could implement the DNS related functions of PCO so that the network can transfer the IP addresses of DNS servers to UE. In particular, I would like the SMF to return the IP addresses of DNS servers in a PDU session establishment accept message only if SMF receives the DNS address request in a PDU session establishment request. ### Describe alternatives/workarounds you've considered Nothing. ### Additional context See 10.5.6.3A in TS 3GPP TS 24.008 [12] or 3GPP TS 24.501 for PCO. ## Issue Template Checklist ### Would you be willing to resolve this issue by submitting a Pull Request? - [ ] Yes, I have the time and I know how to start. - [ ] Yes, I have the time but I don't know how to start, I would need guidance. - [x] No, I don't have the time, although I believe I could do it if I had the time... - [ ] No, I don't have the time and I wouldn't even know how to start.

I am looking forward to implementation of this feature.