Hello,

  As I do occasionally crazy things (like every second day), I noticed
a strange problem with a temporary PPP link.

My default outbound route goes via ethernet, but I want occasionally to
test a few dialin services.  While doing that, I noticed that a downed
interface still replies to e.g. ping:


$ /sbin/ifconfig ppp0
ppp0      Link encap:Point-to-Point Protocol  
          inet addr:194.197.67.2  P-t-P:194.197.68.9  Mask:255.255.255.255
          POINTOPOINT NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:28 errors:1 dropped:0 overruns:0 frame:1
          TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:10 

$ ping 194.197.67.2
PING 194.197.67.2 (194.197.67.2): 56 data bytes
64 bytes from 194.197.67.2: icmp_seq=0 ttl=255 time=0.2 ms
64 bytes from 194.197.67.2: icmp_seq=1 ttl=255 time=0.1 ms
...

$ uname -r
2.2.3


I think a minor test of "is the interface up" is lacking.

/Matti Aarnio <[EMAIL PROTECTED]>
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