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I'm using Windows 7. When I type "route print" under command prompt, I get a IPv4 Route Table with several "On-link" values under the Gateway column. For example, like this one:
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.5 25
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
137.132.0.0 255.255.0.0 172.18.180.1 172.18.180.10 31
137.132.80.16 255.255.255.255 192.168.1.1 192.168.1.5 26
169.254.0.0 255.255.0.0 On-link 172.18.180.10 306
169.254.255.255 255.255.255.255 On-link 172.18.180.10 286
172.18.0.0 255.254.0.0 172.18.180.1 172.18.180.10 31
172.18.180.0 255.255.255.0 On-link 172.18.180.10 286
172.18.180.10 255.255.255.255 On-link 172.18.180.10 286
172.18.180.255 255.255.255.255 On-link 172.18.180.10 286
172.25.64.0 255.255.240.0 172.18.180.1 172.18.180.10 31
192.168.1.0 255.255.255.0 On-link 192.168.1.5 281
192.168.1.5 255.255.255.255 On-link 192.168.1.5 281
192.168.1.255 255.255.255.255 On-link 192.168.1.5 281
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 172.18.180.10 286
224.0.0.0 240.0.0.0 On-link 192.168.1.5 281
255.254.0.0 255.254.0.0 172.18.180.1 172.18.180.10 31
255.255.0.0 255.255.0.0 172.18.180.1 172.18.180.10 31
255.255.240.0 255.255.240.0 172.18.180.1 172.18.180.10 31
255.255.254.0 255.255.254.0 172.18.180.1 172.18.180.10 31
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 172.18.180.10 286
255.255.255.255 255.255.255.255 On-link 192.168.1.5 281
255.255.255.255 255.255.255.255 192.168.1.1 192.168.1.5 26
===========================================================================
So what does "On-link" mean?
@user318934 - nDNSResponder is installed by Microsoft, because so many things use Bonjour and Apple's implementation is smaller/faster/better than they cared to re-write. Delete it? Disable it? leave it alone? Your choice, but it is generally not an issue. – Jesse Chisholm – 2015-03-25T18:09:46.133
@hujunfeng, Wow why do you have such a huge table? – Pacerier – 2017-06-17T04:22:55.777
You may want to check if you have the following installed. C:\Program Files\Bonjour it will contain mDNSResponder and a associated dll I deleted the folder and the problem went away. Bonjour is a Apple Service, but no Apple software was install, so not sure how it got installed. It seems the mDNSResponder is what is causing the problem. – None – 2014-04-28T12:49:56.947