[GPRS] SGSN: Correctly set upper 4 bits of PDP address to 0

It's really strange.  In GTP those 4 bits are 1, in 04.08 they are
zero.  Otherwise the IE is exactly the same :/
1 file changed
tree: fe3b196eaec86abe4b377e3b91e1b60cc8b11a07
  1. hlrsync/
  2. libosmocore/
  3. linux-kernel/
  4. openbsc/
  5. rrlp-ephemeris/
  6. wireshark/