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. -- Regards, Mick
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