DHCPv4 Behavior over IP-IP tunnel

Document Type Expired Internet-Draft (individual)
Authors Peng Wu  , Yong Cui  , Jianping Wu 
Last updated 2011-07-11
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document analyzes the scenario in which DHCPv4 interaction is performed over IP-IP tunnel, and proposes methods to keep DHCP working under such situation. The main issue is encapsulation of DHCP packets on server side, and there are both in-protocol and out- of-protocol solutions for this issue. The in-protocol solution is to have DHCP carrying the encapsulation address information, and the out-of-protocol solution is to have the DHCP server keeping track of the address mapping by inspecting DHCP packets.


Peng Wu (weapon@csnet1.cs.tsinghua.edu.cn)
Yong Cui (yong@csnet1.cs.tsinghua.edu.cn)
Jianping Wu (jianping@cernet.edu.cn)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)