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Bug #3319

also handle PCOs that contain primary and secondary DNS in two separate IPCP containers

Added by dexter 6 months ago. Updated 5 months ago.

Status:
Resolved
Priority:
Normal
Assignee:
Category:
-
Target version:
-
Start date:
06/04/2018
Due date:
% Done:

0%

Spec Reference:

Description

On GTP level in the CREATE PDP CONTEXT message, one finds a field Protocol Configuration Options. This field contains among other info the primary and secondary DNS server address inside an IPCP container. Usually primary and secondary DNS are packed into on IPCP container. However it seems also to be legal to have primary and secondary DNS server in two separate IPCP container. At the moment the parser can only handle one IPCP container so we will loose the secondary DNS in the two-container case. We now have to extend the parser so that it handles IPCP containers flexible.

Attached one finds an example packet where primary and secondary DNS are in two separate IPCP containers.

problematic_packet.pcapng problematic_packet.pcapng 548 Bytes dexter, 06/04/2018 08:25 PM

Related issues

Related to OsmoGGSN (former OpenGGSN) - Bug #3288: osmo-ggsn hangs on certain CREATE PDP CONTEXT gtp packetsResolved2018-05-24

History

#1 Updated by dexter 5 months ago

  • Assignee changed from dexter to pespin

#2 Updated by dexter 5 months ago

Note: #3381 #3319 are duplicates

#3 Updated by stsp 5 months ago

  • Related to Bug #3288: osmo-ggsn hangs on certain CREATE PDP CONTEXT gtp packets added

#4 Updated by stsp 5 months ago

A test for this issue exists in the GGSN TTCN3 test suite: TC_pdp4_act_deact_with_separate_dns

#6 Updated by stsp 5 months ago

  • Status changed from New to Resolved

Above changes have been merged.

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