iSCSI : draft contradicts itself in sections 1.2.5 & 5.5

[Santosh Rao <santoshr@cup.hp.com>]

Julian,

In Section 1.2.5, the draft states that :
"A target SHOULD NOT silently discard data and request re-transmission
through R2T."

In Section 5.5 the draft encourages the above to be performed by stating
:
"When a target receives an iSCSI Data PDU with a data payload digest
error, it MUST discard it and request retransmission with a R2T."

What is the intent of the former statement in Section 1.2.5, when digest
error recovery requires just the opposite ?

Regards,
Santosh
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