It looks like a regular REST call so the probably easiest fix would be to extend the regex matching the volatile data URLs. If you have a recent version, add something like
VfilePatternEx: /pks/lookup.op.get and for an older version, add a modified version of VfilePattern, maybe something like: VfilePattern = (^|.*/)(Index|Packages(\\.gz|\\.bz2|\\.lzma|\\.xz)?|InRelease|Release|mirrors\\.txt|.*\\.gpg|NEWS\\.Debian|Sources(\\.gz|\\.bz2|\\.lzma|\\.xz)?|release|index\\.db-.*\\.gz|Contents-[^/]*(\\.gz|\\.bz2|\\.lzma|\\.xz)?|pkglist[^/]*\\.bz2|rclist[^/]*\\.bz2 |meta- release[^/]*|Translation[^/]*(\\.gz|\\.bz2|\\.lzma|\\.xz)?|MD5SUMS|SHA256SUMS|SHA1SUMS|((setup |setup- legacy)(\\.ini|\\.bz2|\\.hint)(\\.sig)?)|mirrors\\.lst|repo(index|md)\\.xml(\\.asc|\\.key)?|directory\\.yast|products|content(\\.asc|\\.key)?|media|filelists\\.xml\\.gz|filelists\\.sqlite\\.bz2|repomd\\.xml|packages\\.[a-zA-Z][a-zA-Z]\\.gz|info\\.txt|license\\.tar\\.gz|license\\.zip|.*\\.(db|files|abs)(\\.tar(\\.gz|\\.bz2|\\.lzma|\\.xz))?|metalink\\?repo|.*prestodelta\\.xml\\.gz|repodata/.*\\.(xml|sqlite)(\\.gz|\\.bz2|\\.lzma|\\.xz)?|\\.treeinfo|vmlinuz|(initrd|product|squashfs|updates)\\.img)$|/dists/.*/installer-[^/]+/[^0-9][^/]+/images/.*|/pks/lookup.op.get -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/993426 Title: adding a PPA key in pbuilder fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt-cacher-ng/+bug/993426/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs