If you have no name resolution check the content of /etc/resolv.conf
Otherwise your problems might be in the routing table.
I am using version 4.8 and never had problems after disconnecting (press Ctrl-C in console).
Also you can always restart your networking subsystem (instead of restarting the whole computer). In most distros this is achieved with
/etc/init.d/network restart
or
sudo /etc/init.d/network restart (in Debian, Ubuntu, etc)
You can always restart your network instead of the whole PC
If you have no name resolution check the content of /etc/resolv.conf
Otherwise your problems might be in the routing table.
I am using version 4.8 and never had problems after disconnecting (press Ctrl-C in console).
Also you can always restart your networking subsystem (instead of restarting the whole computer). In most distros this is achieved with
/etc/init.d/network restart
or
sudo /etc/init.d/network restart (in Debian, Ubuntu, etc)