Improving mqvpn and xquic
Fixes and features I worked on in mqvpn, a multipath VPN over QUIC, and in xquic underneath it, one problem per post.
- Fixing the MTU
A friend asked how much MTU mqvpn costs. Answering it led to a 16-byte surprise in xquic, ICMP errors my own kernel was dropping, and path MTU discovery that works with ICMP blocked.