Date: Fri, 5 Mar 2004 19:18:52 +0100 From: Stefan `Sec` Zehl <sec@42.org> To: FreeBSD-gnats-submit@FreeBSD.org, freebsd-bugs@FreeBSD.org Subject: Re: kern/63772: tap device / exclusive open problem Message-ID: <20040305181852.GC21713@ice.42.org> In-Reply-To: <200403041920.i24JK826047989@freefall.freebsd.org> References: <20040304191443.67E9B1C8BA@ice.42.org> <200403041920.i24JK826047989@freefall.freebsd.org>
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On Thu, Mar 04, 2004 at 11:20 -0800, FreeBSD-gnats-submit@FreeBSD.org wrote:
> Thank you very much for your problem report.
> It has the internal identification `kern/63772'.
I have checked the if_tap.c in the current and stable branches, and was
thus able to come up with an easy fix:
--- if_tap.c Tue Feb 24 05:35:44 2004
+++ if_tap.c.neu Fri Mar 5 19:09:12 2004
@@ -323,6 +323,9 @@
KASSERT(!(tp->tap_flags & TAP_OPEN),
("%s flags is out of sync", tp->tap_if.if_xname));
+ if (tp->tap_flags & TAP_OPEN)
+ return (EBUSY);
+
bcopy(tp->arpcom.ac_enaddr, tp->ether_addr, sizeof(tp->ether_addr));
tp->tap_pid = td->td_proc->p_pid;
After this simple change, openvpn works with multiple tunnels again.
I hope this can be committed.
CU,
Sec
--
"Caution, you have *no chance* of operating this device successfully
unless you have read the instruction manual."
- from a card covering the screen of an Amstrad phone
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