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* src: introduce passive OS fingerprint matchingFernando Fernandez Mancera2018-08-041-0/+35
Add support for "osf" expression. Example: table ip foo { chain bar { type filter hook input priority 0; policy accept; osf name "Linux" counter packets 3 bytes 132 } } Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>