Date: Fri, 28 Aug 2020 08:50:08 +0000 (UTC) From: Gordon Bergling <gbe@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r364904 - stable/12/share/man/man4 Message-ID: <202008280850.07S8o8Ro067303@repo.freebsd.org>
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Author: gbe (doc committer) Date: Fri Aug 28 08:50:07 2020 New Revision: 364904 URL: https://svnweb.freebsd.org/changeset/base/364904 Log: MFC r364450: gre(4): Mention sysctl for nesting gre tunnels PR: 228465 Submitted by: Sergey Akhmatov <sergey at akhmatov dot ru> Reviewed by: bcr Approved by: bcr Differential Revision: https://reviews.freebsd.org/D26097 Modified: stable/12/share/man/man4/gre.4 Directory Properties: stable/12/ (props changed) Modified: stable/12/share/man/man4/gre.4 ============================================================================== --- stable/12/share/man/man4/gre.4 Fri Aug 28 08:14:19 2020 (r364903) +++ stable/12/share/man/man4/gre.4 Fri Aug 28 08:50:07 2020 (r364904) @@ -29,7 +29,7 @@ .\" .\" $FreeBSD$ .\" -.Dd June 29, 2020 +.Dd August 21, 2020 .Dt GRE 4 .Os .Sh NAME @@ -210,6 +210,15 @@ The kernel must be set to forward datagrams by setting .Va net.inet.ip.forwarding .Xr sysctl 8 variable to non-zero. +.Pp +By default, +.Nm +tunnels may not be nested. +This behavior may be modified at runtime by setting the +.Xr sysctl 8 +variable +.Va net.link.gre.max_nesting +to the desired level of nesting. .Sh SEE ALSO .Xr gif 4 , .Xr inet 4 ,
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