Int 61 Fn 34  U - Pc/tcp Kernel V2.1+ - "icmp_destun" - ???                [N]

   AH = 34h
   ???

Return: ???

Notes: this function is described as "reserved" in the v2.2 documentation
   this function is not supported by Beame&Whiteside's BWPCTCP v3.0a shim