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The specs: VirtualBox 4.2.0 r80737, Windows 7 host, ubuntu server 12.04 guest, Windows 7 host, lftp 4.3.3 transfer session to a remote FTP server (a shared web host provider) Network config: Adapter1: NAT, Adapter2: Host-only Adapter

Running the lftp mirror command from a VB guest will cause the remote IP address itself to become unavailable for a period of time, roughly an hour, to my host (as well as any device behind my NAT wireless router). However, running lftp from the Windows 7 host (the dir I'm mirroring is shared between host and guest) works as expected, no IP "disappearance." However, if I ping or lftp that IP from another IP address (by ssh'ing into a remote machine on a different IP address) I can see and access that IP.

I'm presuming there's some security mechanism that makes that IP address inaccessible from my IP, due to some vagary of this configuration, but what?

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Interestingly, this laptop dual-boots to either Win7 or Ubuntu 12.10. If I boot into Ubunto 12.10, lftp runs without the remote server "disappearing." So there's something about how I've configured the network for VirtualBox that the remote server "doesn't like." – Kyle Skrinak Nov 17 '12 at 12:37

migrated from serverfault.com Oct 25 '12 at 19:49

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