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							- A connection between the subnets behind the gateways <b>moon</b> and <b>sun</b> is set up.
 
- With <b>esp=aes128-sha256-esn!</b> gateway <b>moon</b> proposes the use of
 
- <b>Extended Sequence Numbers</b>. Gateway <b>sun</b> defines <b>esp=aes128-sha256-esn-noesn!</b>,
 
- accepting proposals with and without ESN.
 
- <p/>
 
- Upon the successful establishment of the CHILD SA with ESN, client <b>alice</b> behind
 
- gateway <b>moon</b> pings client <b>bob</b> located behind gateway <b>sun</b> 10 times.
 
 
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