Hostonly network unstable

[raydo]

Hello,
I'm trying to get hostonly network working, but it seems unstable.
One ping succeeds second ping fails... third succeeds, fourth fails, etc...

ping 192.168.10.10
PING 192.168.10.10 (192.168.10.10): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
^C
ping 192.168.10.10
PING 192.168.10.10 (192.168.10.10): 56 data bytes
64 bytes from 192.168.10.10: icmp_seq=0 ttl=64 time=0.626 ms
64 bytes from 192.168.10.10: icmp_seq=1 ttl=64 time=0.429 ms
^C

My Host Configuration
mac osx 10.9.5

I have two guests, both debian wheezy.
Both having 1 interface bridged to my wifi
And 1 interface hostonly vboxnet0 (192.168.10.10) and other vboxnet1 (192.168.20.10)
On host I assigned 192.168.10.1 to vboxnet0 and 192.168.20.1 to vboxnet1

Does anyone know how to fix this ?

Best regards,
Raymond

[Perryg]

Why are you using the host-only mode if you have Bridged working?

Perhaps you should first explain what your proposed outcome is so it can be determined the best approach.