Attention is currently required from: fixeria, osmith, pespin.

fixeria uploaded patch set #5 to this change.

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gprs_gmm: gsm48_rx_gmm_att_req(): drop stale PDP contexts on re-Attach

When an MS sends an Attach Request with a known IMSI or P-TMSI, it
implies the MS has restarted and lost all its PDP context state.  The
SGSN must clean up any PDP contexts it still holds for that subscriber;
otherwise it will not create new ones upon subsequent PDP Context
Activation, causing data connectivity failure after a device reboot.

Change-Id: I20c1f5f741275115635188b2f4b1c5fe7c6e40f1
Related: OS#6922
---
M include/osmocom/sgsn/mmctx.h
M src/sgsn/gprs_gmm.c
M src/sgsn/gprs_gmm_attach.c
M tests/sgsn/sgsn_test.c
M tests/sgsn/sgsn_test.ok
5 files changed, 116 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/94/42594/5

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