This is still an issue in Ubuntu 16.04 up to the current date.
It is an interface bug, as Robin Sheat pointed out.
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Packages, which is subscribed to network-manager in Ubuntu.
Netmask automatically changes to 24
Status in network-manager package in Ubuntu:
Binary package hint: network-manager
I have added a new wireless connection with a WPA2 password and a manual IP
address, like this:
IP address: 126.96.36.199, Netmask: 255.255.255.0 Gateway: 188.8.131.52
I also added two DNS servers.
The connection is flawless (pass my compliments to whoever responsible for
this, I could never get it to work on Hardy). However, when I edit the wireless
connection again, for some reason, the Netmask changes to 24. Just 24. The
connection still works. Everything else is the same.
network-manager version: 0.7~~svn20080908t183521+eni0-0ubuntu2
I'm running Ubuntu Intrepid Ibex Alpha 5.
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