ifconfig [interface] destroy

[Ben Paley]

Hello,

Occasionally when I run ppp I get this message:

bash-2.05b$ ppp
Working in interactive mode
Using interface: tun0
Warning: Add route failed: 0.0.0.0/0 already exists
ppp ON potato>

and ifconfig shows:

bash-2.05b$ ifconfig -a
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        options=8<VLAN_MTU>
        inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255
        inet6 fe80::2c0:26ff:fe27:1909%rl0 prefixlen 64 scopeid 0x1
        ether 00:c0:26:27:19:09
        media: Ethernet autoselect (none)
        status: no carrier
plip0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
        inet 127.0.0.1 netmask 0xff000000
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
vmnet1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.254.1 netmask 0xffffff00 broadcast 192.168.254.255
        inet6 fe80::2bd:1eff:fe0b:1%vmnet1 prefixlen 64 scopeid 0x4
        ether 00:bd:1e:0b:00:01
tun0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500

When this happens ppp seems to run normally and connect to my ISP, but no 
browsers or mail clients etc can see the network... I think this happens when 
someone closes an xterm session without quitting ppp, but I'm not sure - in 
any case, I've read the ifconfig man page and tried to sort it, but this 
happens:

su-2.05b# ifconfig tun0 destroy
ifconfig: SIOCIFDESTROY: Invalid argument

Obviously I'm doing somthing wrong - what is it?

Thanks,
Ben