Because xml2rfc.{tools.}.ietf.org is flaky sometimes.
Use with kramdown-rfc2629 as follows:
$ XML_RESOURCE_ORG_PREFIX=http://unicorn-wg.github.io/idrefs \
kramdown-rfc2629 draft.md > draft.xml
If you are finding that the information is outdated you can help by updating the repository.
- Fork the repo
- Run
update.sh
- Send us a pull request