Am 28.08.2006 um 18:19 schrieb Andrew Thompson:
Pass over to freebsd-net for discussion on the best way to handle
this.
http://www.freebsd.org/cgi/query-pr.cgi?pr=102607
From the PR:
1. change kernel code or to generate static IP address
for bridge interface from attached member interfaces.
or
2. use startup scripts to generate random number and
store it somewhere in /var.
or
3. Make system complain/warning if you set bridge0 to broadcast
address.
or
4. Document in if_bridge(4) that L2 address is random and
document
correct format of ethernet addresses.
Problem with 1. is that address will change if you add or swap NICs
in bridge, but it is still less likely to change than using random
numbers now.
First, the actual behavior and it's implications should be documented
in if_bridge(4), specifically the random assignment of a locally
administered address. (Cf. net/if_bridge.c:bridge_clone_create())
If the user wants a different (fixed) address on the bridge, I think
it's acceptable to configure this in rc.conf along with the member
interfaces. (Already implemented: ifconfig_bridge0="create ether
01:23:45:67:89:ab...")
In general, ifconfig should at least warn if you try to assign an
invalid MAC address to an interface. It probably wouldn't hurt to
add a section about ethernet addresses to the ifconfig man page,
explaining valid choices for LAAs. (I'll try to put together
something over the weekend.)
My 0,02 EUR,
Stefan
--
Stefan Bethke <[EMAIL PROTECTED]> Fon +49 170 346 0140
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