Thanks for the reply. In the kernel log, I just receive packets with destination port number 53. Does netfiler pre rouing hook really capture all packets before ovs?
On 29 Aug 2017 22:49, "Joe Stringer" <[email protected]> wrote: > On 29 August 2017 at 07:32, sougol gheissi <[email protected]> > wrote: > > Hello, > > I have tried to implement something like the above issue, I want to use > > netfilter to capture UDP packets, modify them and then send them to the > OVS. > > As you said you tried it and it works. My problem is, I send SIP packets > to > > the OVS, but when I try to print the destination port, as it is 5060, I > get > > 53, which is a DNS port. How did you do that? > > It sounds like you're received DNS traffic as well as your SIP traffic. >
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