Date: Sat, 17 Feb 2001 19:17:50 +0530 (IST) From: Satyajeet Seth <sseth@sasken.com> To: <net@freebsd.org> Subject: Using netgraph to implement pseudo interfaces Message-ID: <Pine.GSO.4.30.0102171456150.21367-100000@suns3.sasi.com>
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Hi
I wished to implement pseudo interfaces with the following requirements:
1. There is a ethernet interface fxp0 having MAC address MAC0. It also
receives packets with destination MAC address MAC1 and MAC2.
2. The packets with destination MAC address MAC1 are sent to a pseudo
interface 1 and packets with destination MAC address MAC2 are sent to
pseudo interface 2.
3. The packets addressed to MAC0 should be sent to sent to fxp0.
I plan to design a netgraph as follows:
iface1
/
fxp0 <-> bpf
\
iface2
fxp0, iface1, iface2, bpf are nodes of type ng_ether, ng_iface, ng_iface
and ng_bpf respectively.
The packets with destination addresses MAC1 and MAC2 are sent to
interfaces iface1 and iface2 respectively by bpf. Remaining are sent to
fxp0.
Could you suggest some pitfalls/improvements in the above scheme?
I am using FreeBSD 4.0.
Thanks
Satya
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