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I have a gateway router on 192.168.1.1 and a machine configured for
static IP 192.168.1.157.
When I set the subnet mask on the PC to 255.255.255.0 I can, as
expected, ping external IP addresses.
If I change the subnet mask to 255.255.255.128, as expected, I can no
longer ping external IP addresses.
If I disable and enable the adapter, or reboot the PC I can once again
ping external IP addresses, even though the IP configuration window, and
CMD prompt's ipconfig, shows the subnet mask as still being
255.255.255.128.
It seems to be consistent across a range of NICs, PCs, gateways and
network addresses, I've not been able to locate a reference to this
behaviour on the MS support pages.
Anyone know any more about what's going on here?
static IP 192.168.1.157.
When I set the subnet mask on the PC to 255.255.255.0 I can, as
expected, ping external IP addresses.
If I change the subnet mask to 255.255.255.128, as expected, I can no
longer ping external IP addresses.
If I disable and enable the adapter, or reboot the PC I can once again
ping external IP addresses, even though the IP configuration window, and
CMD prompt's ipconfig, shows the subnet mask as still being
255.255.255.128.
It seems to be consistent across a range of NICs, PCs, gateways and
network addresses, I've not been able to locate a reference to this
behaviour on the MS support pages.
Anyone know any more about what's going on here?