For the past few week we're experiencing issue with 2 of our offices. Each office run linux as firewall with a gre tunnel over IPSec to our MTL office. We also have bgp/quagga running over the gre.
At least once per week for a period of about 10 minute the remote office is unable to access ressource over tunnel. What's weird, is that during the downtime period we can ping successfully ressource as well as telnet to the ressource's port. However if we try to initiate a full communication to the remote host, then the session hang forever, until the the we're back online. Looking at the logs show nothing during the time of the issue and the server's load/memory and bandwidth consumption is fine. Has anyone else experience this type of problem.
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