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Date:      Sat, 16 Nov 2013 20:52:06 -0200
From:      "Dr. Rolf Jansen" <rj@obsigna.com>
To:        Florian Smeets <flo@smeets.im>
Cc:        freebsd-net@freebsd.org
Subject:   Re: MPD5 PPTP and L2TP server problem with FreeBSD 9.2-RELEASE-p1
Message-ID:  <4CA8022F-E827-4417-9541-4E3EB4D6155E@obsigna.com>
In-Reply-To: <5287EE0F.3070800@smeets.im>
References:  <6066426D-84BE-40F6-904D-9FF97B128555@obsigna.com> <5287EE0F.3070800@smeets.im>

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Am 16.11.2013 um 20:13 schrieb Florian Smeets <flo@smeets.im>:

> On 16/11/13 22:48, Dr. Rolf Jansen wrote:
>=20
>> Hello!
>>=20
>> Now, the server behaves strange after a PPTP or a L2TP/IPsec-VPN
>> connection had been established. The VPN client can access resources
>> on the server, but not in the LAN and WAN, as it could on 9.1. Even
>> more bugging is, that LAN clients cannot access the internet anymore,
>> once a VPN connection was made, and the problem persists even after
>> the VPN was disconnected, and persists after the mpd5 and racoon were
>> killed, and any dangling SA and SPD had been flushed. netstat -nr and
>> sockstat -4 show nothing strange. For getting back WAN connectivity
>> for LAN clients, I need to restart the server.
>=20
> Do you set net.inet.ip.forwarding in /etc/sysctl.conf? Try setting
> gateway_enable=3D"YES" in /etc/rc.conf. This is caused by some changes =
in
> the rc system and the scripts it calls on interface creation. This bit
> me too.
>=20
> It looks like directly setting net.inet.ip.forwarding in sysctl.conf =
has
> never been officially supported. Though the last time I used
> gateway_enable was probably in the 4.X days, and setting it in
> sysctl.conf has always worked for me, until now :)

Yes, that was the problem. My configuration had net.inet.ip.forwarding=3D1=
 and net.inet6.ip.forwarding=3D1 in /etc/sysctl.conf instead of =
gateway_enable=3D"YES" in /etc/rc.conf. I removed the respective sysctl =
assignments and set gateway_enable=3D"YES", and the VPN servers work as =
before.

Many thanks for the helpful hint.

Best regards

Rolf

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