Using Delta Chat in 'white list' situation [oppressive government, how are attachments stored]

Webxdc apps with P2P capabilities do not work in Russia and other countries with strict internet restrictions. The iroh servers used to establish connections are blocked. However, calls via DeltaChat work because they use email-based signaling. Is it possible to add alternative connection methods?

Webdxc P2P doesn’t even work on a single local network or with IPv6 addresses—that seems odd.

DeltaChat was designed as a decentralized messenger, capable of operating even within a local network without accessing the internet, yet here we see a clear dependence on external resources that are subject to blocking. This violates a key principle underlying this app.