Date: Fri, 29 Jun 2001 12:03:51 +0200 From: Christoph Sold <so@server.i-clue.de> To: Michael Silver <michaelas@yahoo.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: How to recover from ''No route to host' without a reboot? Message-ID: <3B3C5287.4452CDE2@i-clue.de> References: <003501c10075$e626f150$0200000a@silvertriad>
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Michael Silver schrieb:
>
> I have a FreeBSD server (4.2) that is on an unreliable internet connection.
> When the connection goes down, I get the expected 'no route to host'
> message.
>
> The problem is, when the connection returns, I continue to get the 'no route
> to host' error message. How can I set FreeBSD to recover from the lost
> connection without a reboot?
First, check all interfaces are up: ifconfig -a
<snip>
# ifconfig -a
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
^^^^
This interface works
inet 10.0.0.111 netmask 0xff000000 broadcast 10.255.255.255
inet6 fe80::2e0:7dff:fe95:8d29%rl0 prefixlen 64 scopeid 0x1
ether 00:e0:7d:95:8d:29
media: autoselect (100baseTX <full-duplex>) status: active
supported media: autoselect 100baseTX <full-duplex> 100baseTX
10baseT/UT
P <full-duplex> 10baseT/UTP 100baseTX <hw-loopback>
fxp0: flags=8843<BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
^^^
This one does not.
</snip>
To bring an interface back up
ifconfig <interface> up.
Next, check the route to the destination network is still there: Netstat
-rn
<snip>
# netstat -rn
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif
Expire
default 192.168.0.1 UGSc 2 104586 fxp0
^^^
U: This route is working
</snip>
Assuming the default route does not work, simply
# route delete default
# route add default 192.168.0.1
would do the trick.
HTH
-Christoph Sold
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