irule to direct traffic...

[root@ve1023:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.79:80
   ip protocol 6
   rules myrule
}
[root@ve1023:Active] config  b pool foo list
pool foo {
   monitor all fake
   members 200.200.200.101:80 {}
}
[root@ve1023:Active] config  b pool foo|grep -i pool\ member
+-> POOL MEMBER foo/200.200.200.101:80   inactive,down
[root@ve1023:Active] config  b rule myrule list
rule myrule {
   when CLIENT_ACCEPTED {
        if {[active_members [LB::server pool]] < 1} {
                virtual bar2
        }
}
}

[root@ve1023:Active] config  b virtual bar2 list
virtual bar2 {
   snat automap
   pool foo2
   destination 1.1.1.1:80
   ip protocol 6
}
[root@ve1023:Active] config  b pool foo2 list
pool foo2 {
   members 200.200.200.102:80 {}
}

 curl -I http://172.28.19.79/
HTTP/1.1 200 OK
Date: Thu, 08 Dec 2011 04:25:41 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Tue, 08 Nov 2011 12:26:29 GMT
ETag: "4183f1-30-47e02740"
Accept-Ranges: bytes
Content-Length: 48
Connection: close
Content-Type: text/html; charset=UTF-8

[root@ve1023:Active] config  tcpdump -nni 0.0 port 80 and not host 200.200.200.10 and 'tcp[13] & 2!=0'
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on 0.0, link-type EN10MB (Ethernet), capture size 108 bytes
20:26:54.272408 IP 172.28.19.251.39231 > 172.28.19.79.80: S 3171176811:3171176811(0) win 5840 
20:26:54.272447 IP 172.28.19.79.80 > 172.28.19.251.39231: S 165646667:165646667(0) ack 3171176812 win 4380 
20:26:54.273506 IP 172.28.19.251.39231 > 1.1.1.1.80: S 1021857758:1021857758(0) win 4380 
20:26:54.273511 IP 172.28.19.251.39231 > 1.1.1.1.80: S 1021857758:1021857758(0) win 4380 
20:26:54.273521 IP 1.1.1.1.80 > 172.28.19.251.39231: S 300771454:300771454(0) ack 1021857759 win 4380 
20:26:54.273533 IP 1.1.1.1.80 > 172.28.19.251.39231: S 300771454:300771454(0) ack 1021857759 win 4380 
20:26:54.273557 IP 200.200.200.100.39231 > 200.200.200.102.80: S 2110616188:2110616188(0) win 4380 
20:26:54.274554 IP 200.200.200.102.80 > 200.200.200.100.39231: S 1477245557:1477245557(0) ack 2110616189 win 5792