[ubuntu] accidentally removed my Internet connection topic

Hey guys,

i did this:

Code:

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sudo apt-get remove build-essential libreadline-dev libssl-dev libpq5 libpq-dev libreadline5 libsqlite3-dev libpcap-dev openjdk-7-jre subversion git-core autoconf postgresql pgadmin3 curl zlib1g-dev libxml2-dev libxslt1-dev vncviewer libyaml-dev ruby1.9.3 ruby-dev

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Now i dont have a connection anymore.
It says

Code:

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The system network service is not compatible with this version

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I wanted to reinstall the removed packages with a live-stick, but it didnt work.
Any ideas how i can fix this problem ?

Thanks

Ubuntu: 14.10 64bit