We are all familiar with UDP vs. TCP tradeoff, but I think it is quite irrelevant in the context. The OP sees 50% packet loss through ISP#1 and zero packet loss through ISP#2. I do not think that one can claim that 50% loss is "normal" for UDP and the network works "as designed". The "upper" TCP will be able to cope with a relatively small loss rate in the lower layer, but 50% is not reasonable.
What to do may depend on several factors (in no particular order): 1) Is VPN over TCP significantly slower (higher latency) off-peak? 2) Does changing the UDP ports (if at all possible) help? 3) Is ISP#1 a lot cheaper than ISP#2? 4) ISP#1 does not even provide reasonably reliable DNS? Hmm... 5) Can the exact reason for the loss be determined? If it is shaping then there may be a chance that after a determined complaint things will get better for a specific customer. If it is overcommitment and general lack of resources any improvement is unlikely, IMHO. This may be discovered by playing with ports. -- Oleg Goldshmidt | o...@goldshmidt.org _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
