We are using kamailio 5.0 as an inbound dispatcher. Sometimes in testing we see it take over half a second to relay a 200 OK. The logs show the new dialog being creating for the 200 OK within .0001 seconds of receiving the inbound 200 but it takes another .5 seconds for the relayed 200 to actually hit the wire. Here is a screenshot showing the timing of the packets. The box is an EC2 m3.medium under almost zero load (1-2 calls).
Is this normal? What should I be looking at? Screenshot below: 10.0.23.34 is the kamailio box. Carrier IP obfuscated. You can see the carrier resends the 200 OK because of the delay.
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