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falconia uploaded patch set #2 to this change.

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GSUP: set default ipa-name at application level

Prior to this change, if there was no explicit ipa-name configuration
in OsmoMSC, OsmoHLR would see the GSUP connection as MSC-00-00-00-00-00-00.
However, this default is constructed somewhere deep in IPA libraries
and is not visible to the GSUP client application, in this case OsmoMSC.
This situation creates a problem for SMS-over-GSUP routing: when we get
MT-forwardSM.req from an SMSC, we have to send a GSUP response, and this
response needs to get back to the MT-sending SMSC.  Because OsmoHLR
applies only passive routing for these responses, we have to set
source_name when generating MT-forwardSM.res in OsmoMSC - but we cannot
do so if don't know our own IPA name.

Change the default OsmoMSC ipa-name from MSC-00-00-00-00-00-00 to
unnamed-MSC, mirroring OsmoHLR default of unnamed-HLR, and set it
at our application level rather than deep in the libraries.

Related: OS#6135
Change-Id: I7bacd001b81326c32bc262c7d0c0491ded822fa8
---
M src/libmsc/msc_net_init.c
M src/libmsc/msc_vty.c
M tests/test_nodes.vty
3 files changed, 34 insertions(+), 2 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-msc refs/changes/84/35384/2

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