When starting/stopping the VPNService, some packets with internal IP
addresses 10.215.173.1 and 10.215.173.2 may be sent over the LAN.
Based on trial and error, this patch reduces such events. In
particular we can see:
- At startup, DNS queries with internal DNS server 10.215.173.2
- At shutdown, some packets with source IP 10.215.173.1
The shutdown issue is more frequent when stopping the VPN from the
android VPN settings. This also happens with other VPN apps.
It's now possible to choose the PCAP dump mode: none (no external PCAP dump), HTTP server, UDP exporter.
The HTTP server mode is a convenient way to download a PCAP without any client side configuration.
This also makes it possible to capture the PCAP data on a Windows pc, where the UDP collection mode is
not normally applicable.
Closes#13
