Date: Tue, 07 Aug 2012 20:53:52 +0700 From: Eugene Grosbein <egrosbein@rdtc.ru> To: "net@freebsd.org" <net@freebsd.org> Subject: Send traffic to itself using real NIC Message-ID: <50211DF0.2090607@rdtc.ru>
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Hi! I'd like to run some stability tests for some L2-transparent gigabit ethernet network hardware I've got. I have one spare FreeBSD 9.1-PRERELEASE with two-ports igb(4) card and connected both ports using my L2 hardward making a loop. Is it possible to configure FreeBSD in such way so it would send IP traffic for itself not via loopback interface but via igb0/igb1? I've tried to utilize multiple FIBs: sysctl net.add_addr_allfibs=0 ifconfig igb0 inet 10.0.0.1/24 mtu 9126 ifconfig igb1 inet 10.0.1.1/24 mtu 9126 setfib 1 route -q flush setfib 1 route add 10.0.1.1/32 -iface igb1 setfib 2 route -q flush setfib 2 route add 10.0.0.1/32 -iface igb0 But "setfib 1 ping -S 10.0.0.1 10.0.1.1" still runs via lo0 (and has no answer). The only way I've got working is unidirectional stream of packets generated with ng_source(4) (patched due to kern/120304) that shows me 10% packet loss (using netstat -I to see how many packets got through). I would really like using normal TCP/UDP/ICMP streams in addition of ng_source tests. Eugene Grosbein
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