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Re: CVS commit: src/sys

Jukka Ruohonen <> writes:

> On Tue, Jun 04, 2013 at 07:11:02PM -0400, Christos Zoulas wrote:
>> On Jun 5,  2:06am, (Jukka Ruohonen) wrote:
>> -- Subject: Re: CVS commit: src/sys
>> | On Tue, Jun 04, 2013 at 06:47:37PM -0400, Christos Zoulas wrote:
>> | > While here, simplify the code and remove the IPSEC_NAT_T option; always
>> | > compile nat-traversal in so that it does not bitrot.
>> | 
>> | By the way, while I can understand INET6, what is the purpose of INET?

INET is really INET4.

>> | Funny that even src/sys/netinet/udp_usrreq.c claims to work without it
>> | (to the usual funny extent of these #ifdefs).

That file supports UDP for IPv4 and IPv6.  Arguably it should be in a
netinternet directory instead, but moving it would not be useful.

>> I don't think that anyone has compiled INET6 recently without INET
>> (if ever).
> Ah, maybe IPv6-only hosts would be the rationale then. But as you noted, it
> is not difficult to find cases like
>       #ifdef INET
>         ...
>           #ifdef INET6

That's a bug; in theory one should be able to have INET6 without INET.
I did try it once several years ago, and had some trouble that I didn't

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