如此说来，IETF 倾向于选择尚未声明知识产权的技术，或者免费授权的知

That being said, IETF prefer not been declared technology intellectual property rights, technical or freely licensed intellectual property rights; IETF discretion to adopt technology, but also can not promise License; not to enforce the provisions of the security technology of IETF specifications. Thus, IETF specification is not defined for IPv6, or intrinsic epitaxial main problems related to patented technology.

In this way, IETs tend to choose technologies that have not yet declared intellectual property, or technologies that are licensed free of charge, IFFs may adopt technology as appropriate, or may not commit to licensing, and IETF specifications do not provide for enforcement of security technologies. Therefore, the IETF does not regulate the internal or external aspects of the main patented technology for IPv6.

In this way, IETF tends to choose technologies with undeclared intellectual property rights, or technologies with free intellectual property rights; IETF may adopt technologies at its discretion, or not commit to licensing; and IETF specifications do not stipulate mandatory security technologies. Therefore, IETF does not define the internal or external problems of the main patent technologies for IPv6.