I am the assigned Gen-ART reviewer for this draft. For background on Gen-ART, please see the FAQ at < http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq>. Please resolve these comments along with any other Last Call comments you may receive. Document: draft-ietf-netmod-rfc6021-bis-01 Common YANG Data Types Reviewer: Joel M. Halpern Review Date: 19-April-2013 IETF LC End Date: 1-May-2013 IESG Telechat date: N/A Summary: This document is nearly ready for publication as a Standards Track RFC Major issues: (The following may well be a non-issue.) In the revision of the ietf-inet-types, the patterns for the new ip4-address-no-zone and ipv6-address-no-zone are drastically simplified from the ipv4-address and ipv6-address patterns. The new ipv4-address-no-zone allows any sequence of decimal digits an periods, while the original was carefully defined as dotted quads of 0..255. Similarly, te ipv6-address-no-zone allows any arbitrary sequence of hex digits and colons. The original patterns were very careful to match rules for validity. Is there a reason for the change. Minor issues: Nits/editorial comments: