diffServMacAceSourceIpAddr — Multiple manufacturers; see the original MIB MIB copies (LibreNMS/Observium Community), Edgecore MIB copies (Observium Community)
If the diffServMacAceEtherTypeOp is equal(2), diffServMacAceEtherTypeBitmask is 'FFFF'h, and diffServMacAceMinEtherType is '0800'h, this specified source IP address. The packet's source address is AND-ed with the value of diffServMacAceSourceIpAddrBitmask and then compared against the value of this object.