i have dns server i have configure it from Ubuntu bind9 help
i have A record of ubuntu-server.local
i am unable to ping it from ubuntu machine
i am able to ping it from windows 7 machine ...& working 100%
Your screenshot shows the machine is unable to resolve "ubuntu-server.local", it doesn't even get as far as actually pinging it.
Which DNS server is responsible for the .local domain on your LAN? You need to add the IP for it into the list of resolvers in Network Manager so the machine can find it, since it's not something that would be returned by any DNS server on the general Internet.