Bug or feature - arp command on vlan in 9.0

[Radek Krejča]

Hi,

I have about 120 FBSD routers - diskless. I use FBSD 8.2, with no problems. But now I am trying 9.0, the same configuration

I found difference of behavior command arp between 8.2 and 9.0.

In 8.2 I can see arp of ip on all devices, physical and vlans.

vlan356: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=3<RXCSUM,TXCSUM>
        inet 10.201.15.65 netmask 0xffffffe0 broadcast 10.201.15.95

%arp 10.201.15.65
? (10.201.15.65) at 00:25:90:50:29:82 on vlan356 permanent [vlan]

On 9.0 i can see arp only on physical interface em0, on vlans no:

vlan319: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=3<RXCSUM,TXCSUM>
        inet 10.219.5.193 netmask 0xffffffe0 broadcast 10.219.5.223

%ping 10.219.5.193
PING 10.219.5.193 (10.219.5.193): 56 data bytes
64 bytes from 10.219.5.193: icmp_seq=0 ttl=64 time=0.032 ms
^C
--- 10.219.5.193 ping statistics ---
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.032/0.032/0.032/0.000 ms
%arp 10.219.5.193
10.219.5.193 (10.219.5.193) -- no entry

Is it bug or feature? 

Thanks
Radek