sibling howto

Here's what I have,

box1 -- FreeBSD-2.2.8 (with Squid-2.0-PATCH2) -- running
box2 -- FreeBSD-3.1 (with Squid-2.1-PATCH2) -- running

I wanted this configuration,

box1 be a sibling of box2
box2 be a sibling of box1

I added these to both's squid.conf

box1:
cache_peer box2 sibling 3128 3130

box2:
cache_peer box1 sibling 3128 3130

Then, I issued to both boxes,

# squid -k reconfigure

In box1 while reconfiguring, I saw,

<snip>
Configuring sibling box2/3128/3130
<snip>

However, in box2 while reconfiguring itself, I did not see,

"Configuring sibling box1/3128/3130"

Why is this so?

Does this mean that box2 was not able to make box1 as a sibling?

Is this configuration illegal?

Thanks a lot for the help.

--
riko