Date: Fri, 04 Jun 2004 23:57:47 -0700 From: Victor Gregorio <victor@opsource.net> To: "\"Questions@BSD\"" <freebsd-questions@freebsd.org> Subject: IPSEC_ESP and if_tun failed Message-ID: <1086418667.652.13.camel@localhost>
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I am running into a problem with using vpnc and isakmpd on the same system (not at the same time) on a FreeBSD 5.2.1-RELEASE-p8 system. With IPSEC enabled in the kernel, vpnc worked fine. Then, I had to include IPSEC_ESP so that isakmpd would work. Now, vpnc is broken. I compiled in IPSEC_DEBUG and did a $ sudo sysctl debug.if_tun_debug=1 to get some verbose logging. This is what happens... - I start vpnc as root - The client connects - vpnc authenticates properly - IP address is assigned to tun0 - The IPSec connection breaks - vpnc errors out with: socket(SOCK_RAW): Protocol not supported - ifconfig still shows the device tun0 with the assigned IP /var/log/messages shows this: kernel: tun0: open kernel: module_register: module if_tun already exists! kernel: Module if_tun failed to register: 17 kernel: can't re-use a leaf (if_tun_debug)! kernel: tun0: mtu set kernel: tun0: tuninit kernel: tun0: address set, error=0 kernel: tun0: tunoutput kernel: tun0: tunoutput kernel: tun0: tuninit kernel: tun0: address set, error=0 kernel: tun0: closed kernel: tun0: tunoutput kernel: tun0: not ready 032 kernel: tun0: tunoutput kernel: tun0: not ready 032 I have been trying to turn off ESP support using sysctl. OpenBSD has an OID called net.inet.esp.enable. This OID is not listed in sysctl -a. Any advice is appreciated. -Victor
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