On 09/05/2007, at 8:31 PM, Bram Schoenmakers wrote:
Hi,
I tried to reduce the MTU of a network interface on a remote
FreeBSD 6.2
machine.
So that means changing this line in rc.conf:
ifconfig_bge0="inet xxx.xxx.xxx.xxx netmask 255.255.255.128"
to
ifconfig_bge0="inet xxx.xxx.xxx.xxx netmask 255.255.255.128 mtu 1472"
Of course, there's a real IP address set.
Then, I tried to restart the network interface:
/etc/rc.d/netif restart
which went horribly wrong. I lost connection and wasn't able to
reconnect. I
tried to run this in some 'fallback' script, which automatically
should
restore the old configuration and restarting the network interface
again
after 5 minutes. Even if that failed, it should reboot the machine.
But
somehow the script was aborted, although I ran it in a 'screen'
session over
SSH. So the last resort was a manual reboot, which started the
interface
with MTU 1472 just fine.
Could someone please point out where I made the mistake?
When your network interface went down, you lost the connection, your
shell lost the terminal and your script was terminated before it
could finish doing what it was supposed to. Possibly you need to use
something like "nohup" or "screen" (from ports), or have some other
form of terminal available.
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