almost OT os x

[kalin m]

Jeremy Chadwick wrote:
> On Mon, Oct 27, 2008 at 10:19:56PM -0400, kalin m wrote:
>   
>> this is a bit OT but since bsd and os x have enough in common in the  
>> core some people here might have dealt with an os x server before..
>>
>> ok. here is the problem. i have this os x server put on my lap to  
>> administer and there are some really weired things happening.
>>
>> the machine has 2 inet interfaces - 2 cards. one of them - en0 (network  
>> A) - is wired to 192.168.x.x and the other - en1 (network B) - has an  
>> external ip which is not on the same subnet (network)  the 192.168.x.x  
>> belongs to. so far so good.
>>
>> theoretically the en1 (network B) card should be accessible through the  
>> external ip no matter where you a coming from....
>>
>> what happens is that if somebody on network A (of en0)  tries to access  
>> the machine via 192.168.x.x - it works. but if that somebody wants  
>> access that machine via the external ip on network B (en1), like they  
>> would access any other external IP -  they can not. this is weired  
>> because they can access any other machine on B . now me being on the  
>> network B i can access the machine via the external IP which is also on  
>> B, but, and this is the weirdest, i can not access it from outside  
>> either A or B with that same IP (?!?).  but i can access any other  
>> machine on B from outside either subnet....   
>>     
>
> What you're describing sounds like a network loopback problem (at least
> this is what the Linux folks refer to it as).
>
> I would recommend you re-post this question to freebsd-net, as someone
> there can explain to you what's happening in detail, why it happens, and
> how to solve it effectively.
>   
ok. will try there. thanks....

> Also, keep in mind that the "FreeBSD and OS X have enough in common"
> concept is a horrible one -- they do have some pieces in common, but
> OS X really *is* quite a different beast in numerous respects.  Apple,
> sincerely and honestly, has tinkered with all sorts of pieces.  Please
> keep that in mind.  :-)
>
>   
ok too.  i kinda used that as an excuse to post here cause nobody over 
there - on some os x lists and forums - was trying to help. and having 
found a lot of solutions on this list as a long time freebsd user i 
though i'd give it a shot....

thanks....