It doesn't support UDP in general AFAIK, i'm a frequent user of shuttle and find it indispensable, but if you need UDP it does fail, but then most VPN protocols

It doesn't support UDP in general AFAIK, i'm a frequent user of shuttle and find it indispensable, but if you need UDP it does fail, but then most VPN protocols only support a subset of IP layer protocols, e.g multicast doesn't generally work on any of them.