iputils reports its licensing arrangement as "BSD, GPL". GPL is covered by the common licenses. BSD, however, is not.

((The MIT, BSD, zlib/libpng and Python licenses are special cases and cannot be included in the 'common' licenses pkg. For the sake of the license variable, it is treated like a common license (license=('BSD'), license=('MIT'), license=('ZLIB') or license=('Python')) but for the sake of the filesystem, it is a custom license, because each one has its own copyright line. Each MIT, BSD, zlib/libpng or Python licensed package should have its unique license stored in /usr/share/licenses/$pkgname/.))

There is no /usr/share/licenses/iputils/ folder created in which information about the BSD-licensed part of the package is placed.