This one duplicates bug 2569 which is marked as resolved. However, in beta 3 this is not true. According to the ipx mailing list it should be fixed in 2.2.0.15. Beta 3 does include 2.2.018, but it doesn't work anyway ... (this should go to the ipxutils package. However, there's no section for ipxutils in bugzilla. Filed a bug report for that.)
Seems ok in Pinstripe. Changing to resolved.