[SR-Users] missing request username on register

[赵国杰]

Hello all,
     I have two kamailio servers(A and B) with exact same config using the same mysql db. I can register to A but not B. Server B complained:
     ERROR: <script>: fu is sip:851968556538527744 at 104.198.52.31, ru is sip:104.198.52.31, rU is <null>


     After capture the udp packet on both server using ngrep, the REGISTER they received are both good except A returns 200 OK and B returns 403 Not relaying.
     
     I don't have a clue what went wrong.  How come the $rU is null when all the headers in REGISTER are valid? Can someone please point me the direction?


Thanks
Jesse
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