rfc534.txt:Dave Walden:bbn:usa:2:jul:1973:17::draft-ietf-mip4-vpn-problem-statement:2004-11-04:2004-02-12:0:0:256:6:262:2:2002-7-29:440:draft-ietf-mobileip-vpn-problem-statement-req:2003-10-14:123:2005-08-30:301