Pekka, Pekka Savola wrote: > > Getting kinda off-topic for this scope.. > > On Thu, 20 Dec 2001, Fred L. Templin wrote: > > In any case, however, the tunnel pseudo-interfaces are uniquely identified > > by the IPv4 address assigned to each. As long as different IPv4 addresses > > are assigned to the different tunnel pseudo-interfaces (a configuration > > requirement for FreeBSD and Linux, at least), there will never be a case > > of ambiguity such as the one you describe below. Note that if a single > > physical link were used, this would mean assigning two or more IPv4 > > addresses to the same link. But, all OS's I work with support this. > > How will the kernel police that local IPv4 address is different for each?
Since this is getting off topic (as you say), I will refer you simply to the Linux 'sit.c' device driver found in: /usr/src/linux/net/ipv6/sit.c Preferrably, look at the version in the latest USAGI CVS tree at: http://www.linux-ipv6.org The answer to your question is that the kernel *does* enforce the local IPv4 address as different for each tunnel pseudo-interface as can easily be seen from reading the code. Fred [EMAIL PROTECTED] > -- > Pekka Savola "Tell me of difficulties surmounted, > Netcore Oy not those you stumble over and fall" > Systems. Networks. Security. -- Robert Jordan: A Crown of Swords -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
