Date: Thu, 13 Oct 2016 15:40:40 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 213452] [patch] [ipfw] add support for ipfw ngtee/netgraph actions at layer-2 Message-ID: <bug-213452-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D213452 Bug ID: 213452 Summary: [patch] [ipfw] add support for ipfw ngtee/netgraph actions at layer-2 Product: Base System Version: 11.0-STABLE Hardware: Any OS: Any Status: New Keywords: patch Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: ports@grosbein.net Keywords: patch Created attachment 175712 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D175712&action= =3Dedit add support for ngtee/netgraph ipfw actions for layer-2 frames Currently, kernel part of ipfw for layer-2 (ethernet frames) does not suppo= rt and ignores ipfw rules other than "pass", "deny" and dummynet-related. Any other rule acts like "pass" for layer-2 packets. That prevents us from selective copying of Ethernet frames for remote traffic analyzing/mirroring= =20 purposes. Assume, we have ethernet-like interface (NIC, vlan, tap etc.) and we need to selectively mirror some frames there. In case of vlan900 and assuming ng_ipfw(4) netgraph node has a hook named "900" attached to "lower" hook of vlan900's ng_ether(4) node, that would be as simple as: ipfw add ngtee 900 ip from any to 8.8.8.8 layer2 out xmit igb0 Attached patch makes it work. --=20 You are receiving this mail because: You are the assignee for the bug.=
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