Subject: [Sip] ACK retransmission for 2xx

From: "Relkem Los" <[email-masked]>
Date: Wed, 01 Oct 2003 06:07:41 +0000

Hi,
According to RFC3261
“The UAC core MUST generate an ACK request for each 2xx received from the 
transaction layer”
and
“Once the ACK has been constructed, the procedures of [4] are used to 
determine the destination address, port and transport.”

Does this mean that we need to do the DNS procedure for every retransmission 
of this ACK?
Can’t this cause the ACK to be sent to a different IP and even use a 
different transport for each retransmission?

Thanks.

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