1This target selectively works around broken/old applications. 2It can only be used in the mangle table. 3.TP 4\fB\-\-checksum\-fill\fP 5Compute and fill in the checksum in a packet that lacks a checksum. 6This is particularly useful, if you need to work around old applications 7such as dhcp clients, that do not work well with checksum offloads, 8but don't want to disable checksum offload in your device. 9