Commit 40ee3280 authored by Committed by Rafael Monnerat
Make IPv6 on tap optionnal and put only 1 IPv6 address on the tap itself.
tap_ipv6 option let you chose if you want IPv6 on the taps or not. Some customers may decide to have only IPv4 inside their VMs. We put only 1 address on the tap itself (e.g. 2001:67c:1254:e:89:69b0:ffff:ffff/128 instead of 2001:67c:1254:e:89:69b0:ffff:ffff/96) otherwise, when we assign the address 2001:67c:1254:e:89:69b0::/96 inside the VM, the address has "dadfailed" status (dad = "Duplicate Address Detection"). The problem appears only with address "0" (ending in ::) but not with others addresses. We had 2 solutions: * put only one address on the tap (the solution we choose) * forbid address "0" inside the VM The chosen solution has the advantage that the host machine won't answer the ping on behalf of the VM since the tap has only 1 address (its own). /cc @alain.takoudjou /reviewed-on !86
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