# Larger UDP socket buffers for clean 4K/5K streaming.
#
# A single high-resolution frame is a burst (a 5120×1440 keyframe is ~130 packets sent at once),
# which overflows the Linux default (~208 KB) — dropping packets and, under infinite-GOP, freezing
# the client decode on one frame. punktfunk requests 8 MB SO_SNDBUF/SO_RCVBUF, but the kernel
# clamps to these caps; raise them on the HOST for send-side headroom (the host logs a warning
# when the grant is small). macOS clients need no tuning (their default cap is already multi-MB).
#
# Install:  sudo cp scripts/99-punktfunk-net.conf /etc/sysctl.d/ && sudo sysctl --system
net.core.wmem_max = 8388608
net.core.rmem_max = 8388608