id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 12441,TCP connections from host to guest drop on host network reconfiguration events. -> fixed in SVN,jglogan,,"I have started seeing this behavior after upgrading to 4.3.4. It is 100% repeatable on my system, and has a pretty significant impact on productivity. The forum article I posted is [https://forums.virtualbox.org/viewtopic.php?f=8&t=58909]. Reproduction steps: {{{ 1.) Start guest VM 2.) ssh into guest (localhost:2322 forwarded to guest:22 in my config) 3.) Perform any of the following operations: a.) disable, then enable WiFi (issue occurs on enable, not disable) b.) disable VPN on host (happens with IPSecuritas and NetExtender VPNs on my system) c.) enable VPN on host }}} Expected behavior: no impact on ssh connection from host to guest Actual behavior in 4.2.x: same as expected Actual behavior in 4.3.4: ssh connection terminated, 'Connection to localhost closed by remote host.' Config: Host - MacOS 10.8.5, Guest - Ubuntu 13.04, 3.8.0-34-generic x86_64 Guest network - Paravirtualized network (NAT, natdnshostresolver enabled so that I can resolve VPN hostnames, but I have tested with it disabled and the same issue occurs) WiFi physical network connection",defect,closed,network/NAT,VirtualBox 4.3.4,fixed,networking,,Linux,Mac OS X