Has there been any update on this issue or do we know any workarounds?
This issue is having a negative impact on Mac users of the sshuttle tool. See https://github.com/sshuttle/sshuttle/issues/752
This issue can be easily reproduced using the bellow commands:
Setup the packet filter to forward packets destined to 10.1.0.1 to 127.0.0.1:12345
pfctl -ef - <<< '
rdr pass on lo0 inet proto tcp from ! 127.0.0.1 to 10.1.0.1/32 -> 127.0.0.1 port 12345
pass out route-to lo0 inet proto tcp to 10.1.0.1/32 keep state
pass out inet proto tcp to 127.0.0.1/32
''
Start a netcat server on 127.0.0.1:12345
nc -l 12345
In a different session connect and transfer data (here 700KB)
seq -w 6 1 100000 | nc 10.77.0.5 555
You'll see there's an initial burst of traffic and then traffic slows down to bursts of 1448 bytes every ~200ms
Mac Version: 13.1
msg555
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