Attention is currently required from: daniel, fixeria, fixeria, laforge.

pespin has posted comments on this change. ( 
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/36601?usp=email )

Change subject: sgsn: TC_sgsn_context_req_in: match PDP Context IE
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Patch Set 6:

(1 comment)

File sgsn/SGSN_Tests.ttcn:

https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/36601/comment/a2cf2328_a5c8b135
PS6, Line 3748:         f_pdp_ctx_act(apars);
> I don't think it really matters for this specific test scenario whether the 
> requested IP address mat […]
@axilira...@gmail.com I think it makes sense to validate the whole scenario as 
closely as it will usually run. That means MS requesting dynamic address. This 
may affect the code logic inside osmo-sgsn, turning it into a specific state 
where the IP address passed later on in the newly added messages may affect.

A) To me that looks like a bug in osmo-sgsn, because afaiu the MS got an IP 
address assigned from GGSN previously right? Why is it not proividing the IP 
address to the MME then?

Something seems really odd here and we need to agree on what's going first. 
Please avoid merging this patch until we are all on the same track,

I agree it makes no sense to encode an empty PDP Address in SGSN Context 
Response.
After all, a properly established pdp context should have a valid address 
(assigned by GGSN). If there's no valid IP address (it shouldn't happen in 
first place? maybe because pdp ctx creation is ongoing with GGSN?), then the 
SGSN should refrain from sending that PDP Context in the list, as I think is 
explained somewhere in the specs iirc.



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Gerrit-Project: osmo-ttcn3-hacks
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Gerrit-Change-Id: I965c0200ea380c55dc0cd8d3f8e5110883ce2646
Gerrit-Change-Number: 36601
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