I have several guests running on a laptop host. They all work just fine, and I
have host interface networking on all of them. They get DHCP addresses from a
DHCP server elsewhere in my network, as does the host. The host is Ubuntu 8.04
running VB 2.1.4. The guests are all Ubuntu 8.04, and all or clones of the same
original.
If the host is suspended and then unsuspended, guest networking doesn't come
back. It looks OK, and local networking still works (within the guest, such as
pinging the DHC address or localhost) but networking to outside the guest does
not work. It can't get a DHCP address again, either.
Doing a networking restart on the host doesn't help (sudo /etc/init.d/networking
restart). Doing a networking restart on an affected guest does not help either.
Shutting down the guest and restarting it is the only solution.
I have made one major networking-relevant change; in
/etc/udev/rules.d/75-persistent-net-generator.rules I added this rule:
ATTR{address}=="08:00:27:*", GOTO="persistent_net_generator_end"
It causes VB MAC addresses to be ignored (not made persistent). This was
necessary to allow the clones to do networking *at all*; I don't understand why
it is needed, but it is.
Any ideas on a more convenient solution would be greatly appreciated.
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