Zesen Qian <gentoo-u...@dnspod-free.mydnspod.net> wrote: > cov...@ccs.covici.com writes: > > > Mick <michaelkintz...@gmail.com> wrote: > > > >> On Tuesday 30 Dec 2014 03:27:34 Zesen Qian wrote: > >> > Hello list, > >> > Sorry for hijacking Rich's thread, resend here. > >> > I want to disable IPv6 on an certain interface, a simple google > >> > tell me to add one line to /etc/sysctl.d/local.conf > >> > net.ipv6.conf.enp4s0.disable_ipv6=1 > >> > Simple enough, but the problem I have is that both ipv6 and the > >> > dirver of the network card(tg3) is loaded by modules. They 're not > >> > loaded when the service sysctl is started, so there's no entry > >> > named "net.ipv6.conf.enp4s0", which make sysctl not working. > >> > So my question is that, is there any way to disable IPv6 on > >> > specific interface, as early as I can? I want to make it early > >> > because I don't want to receive any RA to mess up my route table. > >> > I guess just adding sysctl to preup() in /etc/conf.d/net should do > >> > the trick, but may I make it earlier? > >> > Any comment is appreciated. > >> > >> > >> Unless the kernel knows of the enp4s0 interface and therefore lists it > >> under > >> sysctl, I can't see how it can be disabled. You could try disabling IPv6 > >> altogether in the kernel, but this may not be what you want to achieve. > >> > >> Alternatively, have a look with modinfo in the module options in the > >> unlikely > >> chance that the module has some option which disables IPv6 functionality. > > > > You may be able to use the feature of modprobe that executes a command > > when the module loads and that way disable the ipv6 interface. I have > > not tried this myself. > > Hello Covici, > Yes, there's a rule named "install <modulename> [command..]" in > modprobe, but aren't they only applied to modprobe itself? I mean, in my > case the ipv6 and tg3 is loaded automatically(maybe by udev?), not by > running "modprobe ipv6". is this kind of module loading also affected by > modprobe rule(in /etc/modprobe.d/*.conf)?
I think so, as I use it for my soundcard modules which udev loads. -- Your life is like a penny. You're going to lose it. The question is: How do you spend it? John Covici cov...@ccs.covici.com