Date: Fri, 19 Apr 2019 18:42:00 +0200 (CEST) From: Wojciech Puchar <wojtek@puchar.net> To: Eugene Grosbein <eugen@grosbein.net> Cc: Wojciech Puchar <wojtek@puchar.net>, freebsd-hackers@freebsd.org Subject: Re: openvpn and system overhead Message-ID: <alpine.BSF.2.20.1904191841200.44949@puchar.net> In-Reply-To: <0cc6e0ac-a9a6-a462-3a1e-bfccfd41e138@grosbein.net> References: <alpine.BSF.2.20.1904171707030.87502@puchar.net> <0cc6e0ac-a9a6-a462-3a1e-bfccfd41e138@grosbein.net>
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> because of unavoidable and big overhead due to constant context switching > from user land to kernel land and back. Be it openvpn or another userland daemon. > > You need either some netmap-based solution or kernel-side vpn like IPsec (maybe with l2tp). well it has to cooperate with multitude of clients like windoze, point&click routers etc. that's why openvpn.
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