strange problem with two virtual bonded intefaces

Hello all,
following situation:
I create bonded interface over two interfaces. This step works very
fine.
I add then VLAN to this interface (let us say number 22).
vconfig add bond0 22

also this works fine.


Then I add two IP addresses to bonded interfaces:

ifconfig bond0.22:0 192.168.100.10 netmask 255.255.255.0 up
ifconfig bond0.22:1 192.168.100.11 netmask 255.255.255.0 up

the machine in question is the only machine that has to use two IP
addresses sharing the same bonded interface.
I can:
1) Establish connection to machines on the same VLAN from both IP
addresses
2) On the first IP address -- 192.168.100.10 I can also establish
connection to machines outside of this partucular LAN using default
gateway.

On attempt to establish connection or for this matter to ping from
the second IP address I seemingly do not get anything. However if I
execute tcpdump -i bond0.22:1 I am very well abls to see replies
coming to second IP address, i.e. to 192.168.100.11

Any ideas? DO I do something wrong or does it sound like a bug ?