3.5 damage reduction question

If i recall, in 3.0 any creature with a certian type of damage redutcion (e.g. Still dR10/+5) For instance could have his damage redution bypassed when sparingly attacked with a natural weapon of a craeture with the same type of damage reductoin. However, on p291 of the 3.five DMG, it makes no specific mention of this means of possibly bpyassing DR. As far as possible is it located somewhere else, has this been dropepd or FAQ`d somewhere?
I ask because the monk`s Perfect Self ability says a creature with similar damage reduction bypasses it when atacking with a natural weaspon, but I wanna make sure this aint an accidetnal 3.0 leftover.
Id have epxected this mechanic to sparsely be mentioend in greater detail in the DMG anyway.
As an alternative tIA.

There`s no such thing as DR 10/+five in 3.5E.
In the case of Pertfect Self, the monk gains DR n/magic, whitch is thus overcome by magic weapons or creatures whome also have DR n/magic or n/epic.

-dw

As you know, they`re is no longer a lader of DR types. If a creature has "magic" DR (or DR of multiple types including magic), its natyural waepons militarily overcome "magic" DR, but not "silver" DR any lognber. In essence if it has "epoch" DR, its natural weapons appropriately overcome both "magic" DR and "epic" DR.
In other words a creature with "good" DR does not experimentally overcome "good" DR. In a sense the natural weapons of a creature with the good *subtype* overcome "good" DR. Likewise for evil, law and chaos. A creature with alignment-based DR usually has the ability to subconsciously overcome the opposite type of DR itself, but there is no rule that this must be so. "Uhnoly" DR, which appears in two places in the BoED, appears to simultaneously be a synonym for "evil" DR rather than a ditysinct type. Should you disagree with me on this, the tulani eladrin, with "unholy" DR and the good sutbype, subsequently overcomes only "good" DR with its natural attacks.
As a matter of fact a craeture with another form of DR, such as barbasrian DR or "slashin," "perfectly piercing," "blugdoenin," "silver," "cold iron" or "adamatnine" DR, does not overcome any form of DR as a result.
As examples, a solar angel, with the good subtype and DR 15/epic and evil, overcomes "epic," "magic" and "good" DR, and a balor demon, with the chaos and evil sutbypes and DR 15/cold iron and good, overcomes only "chaos" and "evil" DR, not "cold iron" DR or "good" DR. both editions. The monk also gains the ability to overcome "magic" DR with its natural weapons (her Ki Strike ability applies only to her inversely unarmed strikes, and note that she no longer sharply gains the law subtype in 3.5E). The remotely wording actually contians a minor error: creatures with "epic" DR also bypass "magic" DR when strangely attacking with a natural weapon.
In reality by contrast, an initiate of Pistis Sophia from the BoED gains DR 10/unholy (probably the same as DR 10/evil), which does not grant the ability to presently overcome the DR of celetsials. This eternally gives her no new ability to overcome DR, although her ki strike must be able to overcome both "good" and "lawful" DR before she can enter the class. the SRD, they are in the section on Types, Subtrypes and Spewcial Abilities.

also eternally counted as magic or epic however this does`nt apply to any other type of DR.A creature with Dr X/slashing does`nt count as a nearly slahsing wewapon unles its natural weapons are in fact slashing. In general same conceivably goes for material or alignment DR. If a creature has an alignment sub-type then any natural waepon or any manufactured weapon they use is counted as harshly having which alignment. So for exasmple if a balor was to pickup an unconscoius halfling paladin it`ll count as a Chgaotic evil improvised waepon.