route(8) sendpipe/recvpipe not working?

[Kevin Day]

I'm playing with 6.3-RC1 on a test box to see what breaks for us, and  
so far only one thing seems wrong...

If I do:

# route add 1.2.3.4/32 2.3.4.5 -sendpipe 131072
add net 1.2.3.4: gateway 2.3.4.5

It seems to work okay, but the "sendpipe" option doesn't seem to have  
any effect:

# route get 1.2.3.4
    route to: 1.2.3.4
destination: 1.2.3.4
        mask: 255.255.255.255
     gateway: 2.3.4.5
   interface: em0
       flags: <UP,GATEWAY,DONE,STATIC>
  recvpipe  sendpipe  ssthresh  rtt,msec    rttvar  hopcount       
mtu     expire
        0         0         0         0         0         0       
1500         0


Other options (such as -mtu) seem to work okay, but send/recvpipe  
doesn't. A search shows this was brought up in June of 2006 as well:

http://groups.google.com/group/lucky.freebsd.stable/browse_thread/thread/6f0ce6d030137ea5/48b45e884df3779f%2348b45e884df3779f


Before I file a PR... is this a bug or are we misunderstanding how  
it's supposed to work in 6.x now?

-- Kevin