topic Re: Disable IPv6? in VMware vSphere™ Discussions https://communities.vmware.com/t5/VMware-vSphere-Discussions/Disable-IPv6/m-p/1854222#M21922 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>Vmware has not made a clear decision towards IPv6, however I advise you if it is not necessary to leave it enabled (default).</P><P>Other vendors advise not to disable it in order not to compromise the stability of their operating system (eg Microsoft).</P><P></P><UL><LI><A href="https://kb.vmware.com/articleview?docid=2150794" title="https://kb.vmware.com/articleview?docid=2150794">ESXi 6.5 and 6.7 host fails with PSOD when IPV6 is globally disabled (2150794) | VMware KB</A> </LI><LI><A href="https://vinfrastructure.it/2017/08/esxi-networking-disable-ipv6/" title="https://vinfrastructure.it/2017/08/esxi-networking-disable-ipv6/">https://vinfrastructure.it/2017/08/esxi-networking-disable-ipv6/</A></LI><LI><A href="https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.networking.doc/GUID-640FF27C-D2B1-4459-8F47-74A6552F7957.html" title="https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.networking.doc/GUID-640FF27C-D2B1-4459-8F47-74A6552F7957.html">Enable or Disable IPv6 Support on a Host</A></LI></UL><P></P><P>This is an example of why IPv6 should not be disabled</P><P></P><UL><LI><A href="http://lmoglie.blogspot.com/2020/02/vcsa-upgrade-fatal-error-during-network.html" title="http://lmoglie.blogspot.com/2020/02/vcsa-upgrade-fatal-error-during-network.html">Lorenzo Moglie - Notes: VCSA Upgrade - Fatal error during network preservation</A></LI></UL><P></P><P>ARomeo</P></BODY></HTML> Tue, 11 Feb 2020 09:54:44 GMT Alex_Romeo 2020-02-11T09:54:44Z Disable IPv6? https://communities.vmware.com/t5/VMware-vSphere-Discussions/Disable-IPv6/m-p/1854221#M21921 <HTML><HEAD></HEAD><BODY><P>Assuming IPv6 hasn't been rolled out yet in your environments, are you leaving IPv6 on or off on your ESXi servers and vCenter?</P><P></P><P>Logic would suggest turning it off would be sensible, but quite honestly I've not noticed any impact either way, and there's even some bug reports / KBs out there re: PSODs if you *do* disable.</P><P></P><P>Interested to know what you all do.</P></BODY></HTML> Tue, 11 Feb 2020 09:24:48 GMT https://communities.vmware.com/t5/VMware-vSphere-Discussions/Disable-IPv6/m-p/1854221#M21921 mrstorey303 2020-02-11T09:24:48Z Re: Disable IPv6? https://communities.vmware.com/t5/VMware-vSphere-Discussions/Disable-IPv6/m-p/1854222#M21922 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>Vmware has not made a clear decision towards IPv6, however I advise you if it is not necessary to leave it enabled (default).</P><P>Other vendors advise not to disable it in order not to compromise the stability of their operating system (eg Microsoft).</P><P></P><UL><LI><A href="https://kb.vmware.com/articleview?docid=2150794" title="https://kb.vmware.com/articleview?docid=2150794">ESXi 6.5 and 6.7 host fails with PSOD when IPV6 is globally disabled (2150794) | VMware KB</A> </LI><LI><A href="https://vinfrastructure.it/2017/08/esxi-networking-disable-ipv6/" title="https://vinfrastructure.it/2017/08/esxi-networking-disable-ipv6/">https://vinfrastructure.it/2017/08/esxi-networking-disable-ipv6/</A></LI><LI><A href="https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.networking.doc/GUID-640FF27C-D2B1-4459-8F47-74A6552F7957.html" title="https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.networking.doc/GUID-640FF27C-D2B1-4459-8F47-74A6552F7957.html">Enable or Disable IPv6 Support on a Host</A></LI></UL><P></P><P>This is an example of why IPv6 should not be disabled</P><P></P><UL><LI><A href="http://lmoglie.blogspot.com/2020/02/vcsa-upgrade-fatal-error-during-network.html" title="http://lmoglie.blogspot.com/2020/02/vcsa-upgrade-fatal-error-during-network.html">Lorenzo Moglie - Notes: VCSA Upgrade - Fatal error during network preservation</A></LI></UL><P></P><P>ARomeo</P></BODY></HTML> Tue, 11 Feb 2020 09:54:44 GMT https://communities.vmware.com/t5/VMware-vSphere-Discussions/Disable-IPv6/m-p/1854222#M21922 Alex_Romeo 2020-02-11T09:54:44Z