On 03/07/18 11:16, Ed Greshko wrote: > On 03/07/18 07:04, Chris Caudle wrote: >> Could be the case that AUTOCONF and DHCPv6 are mutually exclusive now. >> I have a CentOS 7.4 machine which seems to be running correctly with both IPV6_AUTOCONF=yes and DHCPV6C=yes, but that distribution has dhclient provided by dhclient-4.2.5-58.el7.centos.1 and Fedora 27 is using rhclient from dhcp-client-4.3.6-9.fc27. Could be changed behavior between 4.2 and 4.3 of dhclient. >> >> Against that hypothesis is that the dhclient did log that it was requesting on the second interface, which has the same settings in the ifcfg file. I'll try some different settings tonight. I'm pretty sure that the current version of the file was hand edited, I have used nmcli and nmtui in the past. >> I just edited the connection with nmtui and it did use only the autoconf directive, not the dhcp, so I will see if that worked. It did not just from restarting NetworkManager, I will have to try later bringing the interface down all the way and restarting. I am connected over that network via ssh currently so I can't easily shut it down. >> > FWIW, I manually added DHCPV6C=yes to a config file on a VM. As I mentioned, my > router can only support one address assignment method at a time and it is configured > for "stateless". > > With that said, the only message that appears in the journal is... > > Mar 07 11:02:24 f27k.greshko.com NetworkManager[811]: <info> [1520391744.1479] > dhcp-init: Using DHCP client 'dhclient' > > There is no indication from the status of NetworkManager that /sbin/dhclient was ever > started and it isn't running. > > So, if your router is configured for "stateful (dhcp)" it is possible it won't > simultaneously support "stateless". Therefore I would try... > > IPV6_AUTOCONF=no > DHCPV6C=yes > Oh, for completeness I went back to my VM and configured my interface with IPV6_AUTOCONF=no DHCPV6C=yes And this is running.... /sbin/dhclient -d -q -6 But I have no global IPv6 address since there is no dhcpv6 server available. -- If simple questions can be answered with a simple google query then why are there so many of them?
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