On Sun, 2017-01-15 at 17:06 -0700, Nicholas D Steeves wrote: > On Sun, Jan 15, 2017 at 02:43:45PM -0800, Josh Triplett wrote: > > Package: netcfg > > Severity: wishlist > > > > netcfg provides an option to completely disable all automatic > > configuration, but no option to disable ipv6 autoconfig (SLAAC) while > > leaving DHCP enabled. Putting ipv6.disable=1 on the kernel command line > > will cause netcfg to realize the network has no ipv6, but only after > > waiting a similar timeout for a link-local address, defeating the > > purpose. > > > > Please either detect disabled ipv6 and skip those steps, or provide a > > command-line option to disable ipv6 in netcfg. > > > > (Context: repeatedly testing preseed installs in a virtual machine, and > > I don't want to keep waiting on ipv6 autoconfig timing out.) > > > > From what I've read, ipv6.disable=1 hasn't been sufficient for quite > some time, and one requires something like the following in > /etc/sysctl.d/: > > 00-disable-ipv6.conf: > net.ipv6.conf.all.disable_ipv6 = 1 > net.ipv6.conf.default.disable_ipv6 = 1 > net.ipv6.conf.lo.disable_ipv6 = 1 You read wrong. ipv6.disable=1 does all that, and more. (See https://kernel.org/doc/Documentation/networking/ipv6.txt) Ben. -- Ben Hutchings Every program is either trivial or else contains at least one bug
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