AllowedIPs = ::/0 routes IPv4 - on Android?

[Valentijn Sessink]

Hi List,

I have a WG endpoint configured with
AllowedIPs = ::/0
... on an Android phone.

To my surprise, I found out that this also tries to route IPv4 addresses 
to the other WG side.

I was able to change that with a single "bogus" IPv4 address,
"AllowedIPs = ::/0, 192.0.2.99/32"

Is this a known feature? Android 13, WireGuard for Android 
v1.0.20230707, (from AOSP).

Best regards,

Valentijn