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