HP 635n HP Jetdirect Print Servers - Practical IPv6 Deployment for Printing an - Page 35

Ping, Disabled Components

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Figure 9 - Ping It is not possible for the request to be sent out to 127.0.0.1 and for a reply to be received from ::1. Therefore, you know that the ping command used the IPv6 loopback address of ::1 based upon the text "Reply from ::1". Since there are two localhost entries, we know that IPv6 must be preferred. We can change Vista's preferences by modifying the Registry. Before making modifications to the Registry, a backup copy should be made. The Registry key we want to modify has to first be created. Refer to Figure 22: Figure 10 - Disabled Components We can see that the key resides here: • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters The key needs to be called DisabledComponents and should be a DWORD set to zero. Now we need to modify the value of Disabled Components to have Vista prefer IPv4 over IPv6. We can do this by setting the value to 0x20. Refer to Figure 23. 35

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Figure 9 - Ping
It is not possible for the request to be sent out to 127.0.0.1 and for a reply to be received from ::1.
Therefore, you know that the ping command used the IPv6 loopback address of ::1 based upon the
text “Reply from ::1”.
Since there are two localhost entries, we know that IPv6 must be preferred.
We can change Vista’s preferences by modifying the Registry.
Before making modifications to the
Registry, a backup copy should be made.
The Registry key we want to modify has to first be
created.
Refer to Figure 22:
Figure 10 - Disabled Components
We can see that the key resides here:
•
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters
The key needs to be called DisabledComponents and should be a DWORD set to zero.
Now we need to modify the value of Disabled Components to have Vista prefer IPv4 over IPv6.
We can do this by setting the value to 0x20.
Refer to Figure 23.