mm
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@3710 ec53bebd-3082-4978-b11e-865c3cabbd6b
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Network Working Group                                   Assar Westerlund
 | 
			
		||||
<draft-ietf-cat-krb5-ipv6.txt>                                      SICS
 | 
			
		||||
Internet-Draft                                             October, 1997
 | 
			
		||||
Expire in six months
 | 
			
		||||
 | 
			
		||||
                           Kerberos over IPv6
 | 
			
		||||
 | 
			
		||||
Status of this Memo
 | 
			
		||||
 | 
			
		||||
   This document is an Internet-Draft.  Internet-Drafts are working
 | 
			
		||||
   documents of the Internet Engineering Task Force (IETF), its areas,
 | 
			
		||||
   and its working groups.  Note that other groups may also distribute
 | 
			
		||||
   working documents as Internet-Drafts.
 | 
			
		||||
 | 
			
		||||
   Internet-Drafts are draft documents valid for a maximum of six months
 | 
			
		||||
   and may be updated, replaced, or obsoleted by other documents at any
 | 
			
		||||
   time.  It is inappropriate to use Internet- Drafts as reference
 | 
			
		||||
   material or to cite them other than as "work in progress."
 | 
			
		||||
 | 
			
		||||
   To view the entire list of current Internet-Drafts, please check the
 | 
			
		||||
   "1id-abstracts.txt" listing contained in the Internet-Drafts Shadow
 | 
			
		||||
   Directories on ftp.is.co.za (Africa), ftp.nordu.net (Europe),
 | 
			
		||||
   munnari.oz.au (Pacific Rim), ds.internic.net (US East Coast), or
 | 
			
		||||
   ftp.isi.edu (US West Coast).
 | 
			
		||||
 | 
			
		||||
   Distribution of this memo is unlimited.  Please send comments to the
 | 
			
		||||
   <cat-ietf@mit.edu> mailing list.
 | 
			
		||||
 | 
			
		||||
Abstract
 | 
			
		||||
 | 
			
		||||
   This document specifies the address types and transport types
 | 
			
		||||
   necessary for using Kerberos [RFC1510] over IPv6 [RFC1883].
 | 
			
		||||
 | 
			
		||||
Specification
 | 
			
		||||
 | 
			
		||||
   IPv6 addresses are 128-bit (16-octet) quantities, encoded in MSB
 | 
			
		||||
   order.  The type of IPv6 addresses is twenty-four (24).
 | 
			
		||||
 | 
			
		||||
   The following addresses (see [RFC1884]) MUST not appear in any
 | 
			
		||||
   Kerberos packet:
 | 
			
		||||
 | 
			
		||||
   the Unspecified Address
 | 
			
		||||
   the Loopback Address
 | 
			
		||||
   Link-Local addresses
 | 
			
		||||
 | 
			
		||||
   IPv4-mapped IPv6 addresses MUST be represented as addresses of type
 | 
			
		||||
   2.
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		||||
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		||||
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		||||
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Westerlund                                                      [Page 1]
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		||||
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		||||
Internet Draft             Kerberos over IPv6              October, 1997
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
   Communication with the KDC over IPv6 MUST be done as in section 8.2.1
 | 
			
		||||
   of [RFC1510].
 | 
			
		||||
 | 
			
		||||
Discussion
 | 
			
		||||
 | 
			
		||||
   [RFC1510] suggests using the address family constants in
 | 
			
		||||
   <sys/socket.h> from BSD.  This cannot be done for IPv6 as these
 | 
			
		||||
   numbers have diverged and are different on different BSD-derived
 | 
			
		||||
   systems.  [RFC2133] does not either specify a value for AF_INET6.
 | 
			
		||||
   Thus a value has to be decided and the implementations have to
 | 
			
		||||
   convert between the value used in Kerberos HostAddress and the local
 | 
			
		||||
   AF_INET6.
 | 
			
		||||
 | 
			
		||||
   There are a few different address types in IPv6, see [RFC1884].  Some
 | 
			
		||||
   of these are used for quite special purposes and it makes no sense to
 | 
			
		||||
   include them in Kerberos packets.
 | 
			
		||||
 | 
			
		||||
   It is necessary to represent IPv4-mapped addresses as Internet
 | 
			
		||||
   addresses (type 2) to be compatible with Kerberos implementations
 | 
			
		||||
   that only support IPv4.
 | 
			
		||||
 | 
			
		||||
Security considerations
 | 
			
		||||
 | 
			
		||||
   This memo does not introduce any known security considerations in
 | 
			
		||||
   addition to those mentioned in [RFC1510].
 | 
			
		||||
 | 
			
		||||
References
 | 
			
		||||
 | 
			
		||||
   [RFC1510] Kohl, J. and Neuman, C., "The Kerberos Network
 | 
			
		||||
   Authentication Service (V5)", RFC 1510, September 1993.
 | 
			
		||||
 | 
			
		||||
   [RFC1883] Deering, S., Hinden, R., "Internet Protocol, Version 6
 | 
			
		||||
   (IPv6) Specification", RFC 1883, December 1995.
 | 
			
		||||
 | 
			
		||||
   [RFC1884] Hinden, R., Deering, S., "IP Version 6 Addressing
 | 
			
		||||
   Architecture", RFC 1884, December 1995.
 | 
			
		||||
 | 
			
		||||
   [RFC2133] Gilligan, R., Thomson, S., Bound, J., Stevens, W., "Basic
 | 
			
		||||
   Socket Interface Extensions for IPv6", RFC2133, April 1997.
 | 
			
		||||
 | 
			
		||||
Author's Address
 | 
			
		||||
 | 
			
		||||
   Assar Westerlund
 | 
			
		||||
   Swedish Institute of Computer Science
 | 
			
		||||
   Box 1263
 | 
			
		||||
   S-164 29  KISTA
 | 
			
		||||
   Sweden
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
Westerlund                                                      [Page 2]
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		||||
 | 
			
		||||
Internet Draft             Kerberos over IPv6              October, 1997
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
   Phone: +46-8-7521526
 | 
			
		||||
   Fax:   +46-8-7517230
 | 
			
		||||
   EMail: assar@sics.se
 | 
			
		||||
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		||||
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		||||
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Westerlund                                                      [Page 3]
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		||||
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		||||
							
								
								
									
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										136
									
								
								doc/draft-foo.ms
									
									
									
									
									
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							@@ -0,0 +1,136 @@
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.pl 10.0i
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		||||
.po 0
 | 
			
		||||
.ll 7.2i
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		||||
.lt 7.2i
 | 
			
		||||
.nr LL 7.2i
 | 
			
		||||
.nr LT 7.2i
 | 
			
		||||
.ds LF Westerlund
 | 
			
		||||
.ds RF [Page %]
 | 
			
		||||
.ds CF
 | 
			
		||||
.ds LH Internet Draft
 | 
			
		||||
.ds RH October, 1997
 | 
			
		||||
.ds CH Kerberos over IPv6
 | 
			
		||||
.hy 0
 | 
			
		||||
.ad l
 | 
			
		||||
.in 0
 | 
			
		||||
.ta \n(.luR
 | 
			
		||||
Network Working Group	Assar Westerlund
 | 
			
		||||
<draft-ietf-cat-krb5-ipv6.txt>	SICS
 | 
			
		||||
Internet-Draft	October, 1997
 | 
			
		||||
Expire in six months
 | 
			
		||||
 | 
			
		||||
.ce
 | 
			
		||||
Kerberos over IPv6
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Status of this Memo
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
This document is an Internet-Draft.  Internet-Drafts are working
 | 
			
		||||
documents of the Internet Engineering Task Force (IETF), its
 | 
			
		||||
areas, and its working groups.  Note that other groups may also
 | 
			
		||||
distribute working documents as Internet-Drafts.
 | 
			
		||||
 | 
			
		||||
Internet-Drafts are draft documents valid for a maximum of six
 | 
			
		||||
months and may be updated, replaced, or obsoleted by other
 | 
			
		||||
documents at any time.  It is inappropriate to use Internet-
 | 
			
		||||
Drafts as reference material or to cite them other than as
 | 
			
		||||
"work in progress."
 | 
			
		||||
 | 
			
		||||
To view the entire list of current Internet-Drafts, please check
 | 
			
		||||
the "1id-abstracts.txt" listing contained in the Internet-Drafts
 | 
			
		||||
Shadow Directories on ftp.is.co.za (Africa), ftp.nordu.net
 | 
			
		||||
(Europe), munnari.oz.au (Pacific Rim), ds.internic.net (US East
 | 
			
		||||
Coast), or ftp.isi.edu (US West Coast).
 | 
			
		||||
 | 
			
		||||
Distribution of this memo is unlimited.  Please send comments to the
 | 
			
		||||
<cat-ietf@mit.edu> mailing list.
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Abstract
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
This document specifies the address types and transport types
 | 
			
		||||
necessary for using Kerberos [RFC1510] over IPv6 [RFC1883].
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Specification
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
IPv6 addresses are 128-bit (16-octet) quantities, encoded in MSB
 | 
			
		||||
order.  The type of IPv6 addresses is twenty-four (24).
 | 
			
		||||
 | 
			
		||||
The following addresses (see [RFC1884]) MUST not appear in any
 | 
			
		||||
Kerberos packet:
 | 
			
		||||
 | 
			
		||||
the Unspecified Address
 | 
			
		||||
.br
 | 
			
		||||
the Loopback Address
 | 
			
		||||
.br
 | 
			
		||||
Link-Local addresses
 | 
			
		||||
 | 
			
		||||
IPv4-mapped IPv6 addresses MUST be represented as addresses of type 2.
 | 
			
		||||
 | 
			
		||||
Communication with the KDC over IPv6 MUST be done as in section
 | 
			
		||||
8.2.1 of [RFC1510].
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Discussion
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
[RFC1510] suggests using the address family constants in
 | 
			
		||||
<sys/socket.h> from BSD.  This cannot be done for IPv6 as these
 | 
			
		||||
numbers have diverged and are different on different BSD-derived
 | 
			
		||||
systems.  [RFC2133] does not either specify a value for AF_INET6.
 | 
			
		||||
Thus a value has to be decided and the implementations have to convert
 | 
			
		||||
between the value used in Kerberos HostAddress and the local AF_INET6.
 | 
			
		||||
 | 
			
		||||
There are a few different address types in IPv6, see [RFC1884].  Some
 | 
			
		||||
of these are used for quite special purposes and it makes no sense to
 | 
			
		||||
include them in Kerberos packets.
 | 
			
		||||
 | 
			
		||||
It is necessary to represent IPv4-mapped addresses as Internet
 | 
			
		||||
addresses (type 2) to be compatible with Kerberos implementations that
 | 
			
		||||
only support IPv4.
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Security considerations
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
This memo does not introduce any known security considerations in
 | 
			
		||||
addition to those mentioned in [RFC1510].
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
References
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
[RFC1510] Kohl, J. and Neuman, C., "The Kerberos Network
 | 
			
		||||
Authentication Service (V5)", RFC 1510, September 1993.
 | 
			
		||||
 | 
			
		||||
[RFC1883] Deering, S., Hinden, R., "Internet Protocol, Version 6
 | 
			
		||||
(IPv6) Specification", RFC 1883, December 1995.
 | 
			
		||||
 | 
			
		||||
[RFC1884] Hinden, R., Deering, S., "IP Version 6 Addressing
 | 
			
		||||
Architecture", RFC 1884, December 1995.
 | 
			
		||||
 | 
			
		||||
[RFC2133] Gilligan, R., Thomson, S., Bound, J., Stevens, W., "Basic
 | 
			
		||||
Socket Interface Extensions for IPv6", RFC2133, April 1997.
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Author's Address
 | 
			
		||||
 | 
			
		||||
Assar Westerlund
 | 
			
		||||
.br
 | 
			
		||||
Swedish Institute of Computer Science
 | 
			
		||||
.br
 | 
			
		||||
Box 1263
 | 
			
		||||
.br
 | 
			
		||||
S-164 29  KISTA
 | 
			
		||||
.br
 | 
			
		||||
Sweden
 | 
			
		||||
 | 
			
		||||
Phone: +46-8-7521526
 | 
			
		||||
.br
 | 
			
		||||
Fax:   +46-8-7517230
 | 
			
		||||
.br
 | 
			
		||||
EMail: assar@sics.se
 | 
			
		||||
							
								
								
									
										171
									
								
								doc/standardisation/draft-foo
									
									
									
									
									
										Normal file
									
								
							
							
						
						
									
										171
									
								
								doc/standardisation/draft-foo
									
									
									
									
									
										Normal file
									
								
							@@ -0,0 +1,171 @@
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 | 
			
		||||
 | 
			
		||||
 | 
			
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 | 
			
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 | 
			
		||||
 | 
			
		||||
Network Working Group                                   Assar Westerlund
 | 
			
		||||
<draft-ietf-cat-krb5-ipv6.txt>                                      SICS
 | 
			
		||||
Internet-Draft                                             October, 1997
 | 
			
		||||
Expire in six months
 | 
			
		||||
 | 
			
		||||
                           Kerberos over IPv6
 | 
			
		||||
 | 
			
		||||
Status of this Memo
 | 
			
		||||
 | 
			
		||||
   This document is an Internet-Draft.  Internet-Drafts are working
 | 
			
		||||
   documents of the Internet Engineering Task Force (IETF), its areas,
 | 
			
		||||
   and its working groups.  Note that other groups may also distribute
 | 
			
		||||
   working documents as Internet-Drafts.
 | 
			
		||||
 | 
			
		||||
   Internet-Drafts are draft documents valid for a maximum of six months
 | 
			
		||||
   and may be updated, replaced, or obsoleted by other documents at any
 | 
			
		||||
   time.  It is inappropriate to use Internet- Drafts as reference
 | 
			
		||||
   material or to cite them other than as "work in progress."
 | 
			
		||||
 | 
			
		||||
   To view the entire list of current Internet-Drafts, please check the
 | 
			
		||||
   "1id-abstracts.txt" listing contained in the Internet-Drafts Shadow
 | 
			
		||||
   Directories on ftp.is.co.za (Africa), ftp.nordu.net (Europe),
 | 
			
		||||
   munnari.oz.au (Pacific Rim), ds.internic.net (US East Coast), or
 | 
			
		||||
   ftp.isi.edu (US West Coast).
 | 
			
		||||
 | 
			
		||||
   Distribution of this memo is unlimited.  Please send comments to the
 | 
			
		||||
   <cat-ietf@mit.edu> mailing list.
 | 
			
		||||
 | 
			
		||||
Abstract
 | 
			
		||||
 | 
			
		||||
   This document specifies the address types and transport types
 | 
			
		||||
   necessary for using Kerberos [RFC1510] over IPv6 [RFC1883].
 | 
			
		||||
 | 
			
		||||
Specification
 | 
			
		||||
 | 
			
		||||
   IPv6 addresses are 128-bit (16-octet) quantities, encoded in MSB
 | 
			
		||||
   order.  The type of IPv6 addresses is twenty-four (24).
 | 
			
		||||
 | 
			
		||||
   The following addresses (see [RFC1884]) MUST not appear in any
 | 
			
		||||
   Kerberos packet:
 | 
			
		||||
 | 
			
		||||
   the Unspecified Address
 | 
			
		||||
   the Loopback Address
 | 
			
		||||
   Link-Local addresses
 | 
			
		||||
 | 
			
		||||
   IPv4-mapped IPv6 addresses MUST be represented as addresses of type
 | 
			
		||||
   2.
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
Westerlund                                                      [Page 1]
 | 
			
		||||
 | 
			
		||||
Internet Draft             Kerberos over IPv6              October, 1997
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
   Communication with the KDC over IPv6 MUST be done as in section 8.2.1
 | 
			
		||||
   of [RFC1510].
 | 
			
		||||
 | 
			
		||||
Discussion
 | 
			
		||||
 | 
			
		||||
   [RFC1510] suggests using the address family constants in
 | 
			
		||||
   <sys/socket.h> from BSD.  This cannot be done for IPv6 as these
 | 
			
		||||
   numbers have diverged and are different on different BSD-derived
 | 
			
		||||
   systems.  [RFC2133] does not either specify a value for AF_INET6.
 | 
			
		||||
   Thus a value has to be decided and the implementations have to
 | 
			
		||||
   convert between the value used in Kerberos HostAddress and the local
 | 
			
		||||
   AF_INET6.
 | 
			
		||||
 | 
			
		||||
   There are a few different address types in IPv6, see [RFC1884].  Some
 | 
			
		||||
   of these are used for quite special purposes and it makes no sense to
 | 
			
		||||
   include them in Kerberos packets.
 | 
			
		||||
 | 
			
		||||
   It is necessary to represent IPv4-mapped addresses as Internet
 | 
			
		||||
   addresses (type 2) to be compatible with Kerberos implementations
 | 
			
		||||
   that only support IPv4.
 | 
			
		||||
 | 
			
		||||
Security considerations
 | 
			
		||||
 | 
			
		||||
   This memo does not introduce any known security considerations in
 | 
			
		||||
   addition to those mentioned in [RFC1510].
 | 
			
		||||
 | 
			
		||||
References
 | 
			
		||||
 | 
			
		||||
   [RFC1510] Kohl, J. and Neuman, C., "The Kerberos Network
 | 
			
		||||
   Authentication Service (V5)", RFC 1510, September 1993.
 | 
			
		||||
 | 
			
		||||
   [RFC1883] Deering, S., Hinden, R., "Internet Protocol, Version 6
 | 
			
		||||
   (IPv6) Specification", RFC 1883, December 1995.
 | 
			
		||||
 | 
			
		||||
   [RFC1884] Hinden, R., Deering, S., "IP Version 6 Addressing
 | 
			
		||||
   Architecture", RFC 1884, December 1995.
 | 
			
		||||
 | 
			
		||||
   [RFC2133] Gilligan, R., Thomson, S., Bound, J., Stevens, W., "Basic
 | 
			
		||||
   Socket Interface Extensions for IPv6", RFC2133, April 1997.
 | 
			
		||||
 | 
			
		||||
Author's Address
 | 
			
		||||
 | 
			
		||||
   Assar Westerlund
 | 
			
		||||
   Swedish Institute of Computer Science
 | 
			
		||||
   Box 1263
 | 
			
		||||
   S-164 29  KISTA
 | 
			
		||||
   Sweden
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
 | 
			
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 | 
			
		||||
Westerlund                                                      [Page 2]
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 | 
			
		||||
Internet Draft             Kerberos over IPv6              October, 1997
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
   Phone: +46-8-7521526
 | 
			
		||||
   Fax:   +46-8-7517230
 | 
			
		||||
   EMail: assar@sics.se
 | 
			
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Westerlund                                                      [Page 3]
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		||||
							
								
								
									
										136
									
								
								doc/standardisation/draft-foo.ms
									
									
									
									
									
										Normal file
									
								
							
							
						
						
									
										136
									
								
								doc/standardisation/draft-foo.ms
									
									
									
									
									
										Normal file
									
								
							@@ -0,0 +1,136 @@
 | 
			
		||||
.pl 10.0i
 | 
			
		||||
.po 0
 | 
			
		||||
.ll 7.2i
 | 
			
		||||
.lt 7.2i
 | 
			
		||||
.nr LL 7.2i
 | 
			
		||||
.nr LT 7.2i
 | 
			
		||||
.ds LF Westerlund
 | 
			
		||||
.ds RF [Page %]
 | 
			
		||||
.ds CF
 | 
			
		||||
.ds LH Internet Draft
 | 
			
		||||
.ds RH October, 1997
 | 
			
		||||
.ds CH Kerberos over IPv6
 | 
			
		||||
.hy 0
 | 
			
		||||
.ad l
 | 
			
		||||
.in 0
 | 
			
		||||
.ta \n(.luR
 | 
			
		||||
Network Working Group	Assar Westerlund
 | 
			
		||||
<draft-ietf-cat-krb5-ipv6.txt>	SICS
 | 
			
		||||
Internet-Draft	October, 1997
 | 
			
		||||
Expire in six months
 | 
			
		||||
 | 
			
		||||
.ce
 | 
			
		||||
Kerberos over IPv6
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Status of this Memo
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
This document is an Internet-Draft.  Internet-Drafts are working
 | 
			
		||||
documents of the Internet Engineering Task Force (IETF), its
 | 
			
		||||
areas, and its working groups.  Note that other groups may also
 | 
			
		||||
distribute working documents as Internet-Drafts.
 | 
			
		||||
 | 
			
		||||
Internet-Drafts are draft documents valid for a maximum of six
 | 
			
		||||
months and may be updated, replaced, or obsoleted by other
 | 
			
		||||
documents at any time.  It is inappropriate to use Internet-
 | 
			
		||||
Drafts as reference material or to cite them other than as
 | 
			
		||||
"work in progress."
 | 
			
		||||
 | 
			
		||||
To view the entire list of current Internet-Drafts, please check
 | 
			
		||||
the "1id-abstracts.txt" listing contained in the Internet-Drafts
 | 
			
		||||
Shadow Directories on ftp.is.co.za (Africa), ftp.nordu.net
 | 
			
		||||
(Europe), munnari.oz.au (Pacific Rim), ds.internic.net (US East
 | 
			
		||||
Coast), or ftp.isi.edu (US West Coast).
 | 
			
		||||
 | 
			
		||||
Distribution of this memo is unlimited.  Please send comments to the
 | 
			
		||||
<cat-ietf@mit.edu> mailing list.
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Abstract
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
This document specifies the address types and transport types
 | 
			
		||||
necessary for using Kerberos [RFC1510] over IPv6 [RFC1883].
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Specification
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
IPv6 addresses are 128-bit (16-octet) quantities, encoded in MSB
 | 
			
		||||
order.  The type of IPv6 addresses is twenty-four (24).
 | 
			
		||||
 | 
			
		||||
The following addresses (see [RFC1884]) MUST not appear in any
 | 
			
		||||
Kerberos packet:
 | 
			
		||||
 | 
			
		||||
the Unspecified Address
 | 
			
		||||
.br
 | 
			
		||||
the Loopback Address
 | 
			
		||||
.br
 | 
			
		||||
Link-Local addresses
 | 
			
		||||
 | 
			
		||||
IPv4-mapped IPv6 addresses MUST be represented as addresses of type 2.
 | 
			
		||||
 | 
			
		||||
Communication with the KDC over IPv6 MUST be done as in section
 | 
			
		||||
8.2.1 of [RFC1510].
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Discussion
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
[RFC1510] suggests using the address family constants in
 | 
			
		||||
<sys/socket.h> from BSD.  This cannot be done for IPv6 as these
 | 
			
		||||
numbers have diverged and are different on different BSD-derived
 | 
			
		||||
systems.  [RFC2133] does not either specify a value for AF_INET6.
 | 
			
		||||
Thus a value has to be decided and the implementations have to convert
 | 
			
		||||
between the value used in Kerberos HostAddress and the local AF_INET6.
 | 
			
		||||
 | 
			
		||||
There are a few different address types in IPv6, see [RFC1884].  Some
 | 
			
		||||
of these are used for quite special purposes and it makes no sense to
 | 
			
		||||
include them in Kerberos packets.
 | 
			
		||||
 | 
			
		||||
It is necessary to represent IPv4-mapped addresses as Internet
 | 
			
		||||
addresses (type 2) to be compatible with Kerberos implementations that
 | 
			
		||||
only support IPv4.
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Security considerations
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
This memo does not introduce any known security considerations in
 | 
			
		||||
addition to those mentioned in [RFC1510].
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
References
 | 
			
		||||
 | 
			
		||||
.in 3
 | 
			
		||||
[RFC1510] Kohl, J. and Neuman, C., "The Kerberos Network
 | 
			
		||||
Authentication Service (V5)", RFC 1510, September 1993.
 | 
			
		||||
 | 
			
		||||
[RFC1883] Deering, S., Hinden, R., "Internet Protocol, Version 6
 | 
			
		||||
(IPv6) Specification", RFC 1883, December 1995.
 | 
			
		||||
 | 
			
		||||
[RFC1884] Hinden, R., Deering, S., "IP Version 6 Addressing
 | 
			
		||||
Architecture", RFC 1884, December 1995.
 | 
			
		||||
 | 
			
		||||
[RFC2133] Gilligan, R., Thomson, S., Bound, J., Stevens, W., "Basic
 | 
			
		||||
Socket Interface Extensions for IPv6", RFC2133, April 1997.
 | 
			
		||||
 | 
			
		||||
.ti 0
 | 
			
		||||
Author's Address
 | 
			
		||||
 | 
			
		||||
Assar Westerlund
 | 
			
		||||
.br
 | 
			
		||||
Swedish Institute of Computer Science
 | 
			
		||||
.br
 | 
			
		||||
Box 1263
 | 
			
		||||
.br
 | 
			
		||||
S-164 29  KISTA
 | 
			
		||||
.br
 | 
			
		||||
Sweden
 | 
			
		||||
 | 
			
		||||
Phone: +46-8-7521526
 | 
			
		||||
.br
 | 
			
		||||
Fax:   +46-8-7517230
 | 
			
		||||
.br
 | 
			
		||||
EMail: assar@sics.se
 | 
			
		||||
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