Log Message:
Update net/dtcp package to 20060109.

2006-01-04  Hajimu UMEMOTO  <ume@mahoroba.org>

	* dtcps.rb (service_dtcp): When new connection request for UDP
	tunnel comes, don't disconnect existing connection even if is
	comes from same IPv4 address.

	* dtcpc.rb, dtcps.rb: Make an IPv6 over an IPv4 tunnel NAT
	friendly.  If -n option is specified to dtcpc, it is enabled.  It
	requires some modification to ng_ksocket of server side.

2006-01-02  Hajimu UMEMOTO  <ume@mahoroba.org>

	* dtcpc.rb, dtcps.rb: Add experimental support for an IPv6 over an
	IPv4 tunnel using Netgraph.  The relevant options are -b and -U.

	* dtcps.rb: Trap SIGINT as well as SIGTERM, and ignore SIGHUP.