AROS bcpl.S currently has an unimplemented entry for "QueuePacket" at global vector entry -21 (offset -$54). That is mis-named, it should be NoReqLoadSeg. NoReqLoadSeg is pretty simple: set pr_WindowPtr to -1, call LoadSeg(), then restore pr_WindowPtr.
While the 3.1 dos_lib.i include file shows an entry for QueuePacket(), that function offset is private. (Was there ever a QueuePacket function at that offset? Maybe in Kickstart 1.1 or earlier???)
"GetPacket" corresponds to ClearVec(), LVO -$A2. ClearVec() calls the BCPL routine named "clearmem" in the AROS source. However at least as of Kickstart 3.1, the routine called by jumping to DOSBase+_LVOClearVec just does MOVEQ #0,D0 / RTS. So ClearVec() is no longer implemented as a DOS library function. Its BCPL equivalent clearvec *is* implemented though.
"QueuePacket" corresponds to NoReqLoadSeg(), LVO -$A8. NoReqLoadSeg *is* implemented in the 3.1 ROM, both as BCPL routine and in the DosBase jump table.