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  #1 (permalink)  
Old 3 Weeks Ago
Corona688 Corona688 is offline
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Stuck ARP entries
About a week ago a customer hooked up a wireless router backwards to our network, causing it to serve incorrect DHCP addresses to some of them. Our networks are mostly statically assigned so this didn't cause as much damage as it might have, but now, over a week later, I still have incomplete 192.168.10.x entries stuck in the ARP table:
Code:
$ arp -n
Address                  HWtype  HWaddress           Flags Mask            Iface
192.168.20.27            ether   00:60:B3:20:71:32   C                     lan
192.168.20.36            ether   00:15:E9:84:E8:60   C                     lan
192.168.20.64            ether   00:22:5F:14:B4:75   C                     lan
192.168.10.101                   (incomplete)                              lan
192.168.20.33            ether   00:13:4F:00:A2:85   C                     lan
192.168.10.84                    (incomplete)                              lan
208.92.117.109           ether   00:80:AE:97:78:1F   C                     wan
192.168.10.65                    (incomplete)                              lan
192.168.20.46            ether   00:07:E9:BD:FB:79   C                     lan
192.168.10.90                    (incomplete)                              lan
192.168.20.130           ether   00:60:B3:07:10:16   C                     lan
192.168.20.21            ether   00:13:4F:00:40:85   C                     lan
192.168.10.88                    (incomplete)                              lan
192.168.20.43            ether   00:15:E9:32:C4:F1   C                     lan
192.168.20.14            ether   00:13:4F:00:64:FF   C                     lan
$
arp -d cannot delete the incomplete entries, and they won't go away. I suppose they're harmless but I'd get rid of them if I could. Is there any better way than a reboot?
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Old 5 Days Ago
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otheus otheus is offline Forum Staff  
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They are harmless.
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