* ns2: message: allow to pass a foreign NSVCI to STATUS PDU
* ns2: fsm: add comment don't answer on a STATUS with a STATUS
* ns2: ensure the NSVC is in the correct mode for NSVC UNKNOWN/NSVC BLOCKED cause codes
* ns2: message: BLOCK/BLOCK ACK allow to use a given NSVCI instead of using the nsvc nsvci
* gprs_ns2: ensure no duplicate UDP NSVC can be created
* gprs_ns2: add value_string for GPRS_NS2_AFF_CAUSE_SNS_NO_ENDPOINTS
* gprs_ns2_message: tx_status: move all cause dependent code into the switch/case
* gprs_ns2: truncate the NS_STATUS to the MTU
* gprs_ns2_fr: pass MTU changes to the NSE
* gprs_ns2_sns: rename fsm events to include RX or REQ prefix
* gprs_ns2: make gprs_ns2_recv_prim() always take msgb ownership
* gprs_ns2: fix typo in function name ns2_load_sharing_modulo
* gprs_ns2: implement a simple load sharing for UDP
* gprs_ns2_vty: add optional argument signalling and data weights to `nsvc udp`
* gprs_ns2: rework IP-SNS binds