[Bug 207087] kernel: r295285 in 10.2-STABLE breaks OpenVPN functionality

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207087

            Bug ID: 207087
           Summary: kernel: r295285 in 10.2-STABLE breaks OpenVPN
                    functionality
           Product: Base System
           Version: 10.2-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: g_amanakis at yahoo.com
                CC: freebsd-amd64 at FreeBSD.org
                CC: freebsd-amd64 at FreeBSD.org

Created attachment 166844
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=166844&action=edit
server.conf

r295285 in 10.2-STABLE breaks OpenVPN server functionality. Tested with OpenVPN
2.3.10 on amd64 bare-metal hardware with IPv4. Clients connected to the OpenVPN
server experience slow IPv4 www traffic and connection resets. 

Clients connect via IPv4 UDP to the server, and in-kernel NAT is performed on
the external interface. OpenVPN configs are attached. The kernel has IPSEC,
IPSEC_NAT_T and VIMAGE enabled, and SCTP disabled.

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