Hi, recently someone asked about a script for simulating or emulating degraded network conditions. I could not provide an answer, because I do not have something like that available, yet. But I have just read about "Comcast" which seems to do just that: https://github.com/tylertreat/Comcast The README.md contains information on how to use iptables and/or tc directly instead of through Comcast as well: """ Linux On Linux, you can use iptables to drop incoming and outgoing packets. $ iptables -A INPUT -m statistic --mode random --probability 0.1 -j DROP $ iptables -A OUTPUT -m statistic --mode random --probability 0.1 -j DROP Alternatively, you can use tc which supports some additional options. $ tc qdisc add dev eth0 root netem delay 50ms 20ms distribution normal $ tc qdisc change dev eth0 root netem reorder 0.02 duplicate 0.05 corrupt 0.01 To reset: $ tc qdisc del dev eth0 root netem """ -- https://github.com/tylertreat/Comcast#linux I have not tested this, but it seems to provide a starting point for experimentation. HTH, Erik -- To a first approximation, we can say that accidents are almost always the result of incorrect estimates of the likelihood of one or more things. -- C. Michael Holloway, NASA
