Does anyone know offhand the reason why network connections fail if socket buffers are set above 256k?
# sysctl net.inet.tcp.sendspace=262145 # telnet naiad 80 Trying 2a01:348:108:108:a00:20ff:feda:88b6... Trying 195.95.187.35... # I was thinking of looking into it, but before going down that rabbit hole I thought I'd ask in case there's a quick answer that somebody already knows... (yes, people do use buffers much bigger than this, I looked at some of the academic ftp mirror sites - looks like mirrorservice.org wil negotiate 3MB buffers, aarnet 35MB, if you let them - presumably they try to avoid buffers being a bottleneck for clients reaching them over a national network of at least 1Gb/s end-to-end).
